Autolite 24 Heat Range


That's OK I found a good Autolite chart that showed what plugs fit the TEA-20, the 425 and a platinum one AP425. We have dyno proven this plug style and temp range to be perfect for use with our heads year round. Joined Sep 22, 2006 · 1,704 Posts. J and J Auto GenII 3/07/2006 18:24:18: RE: Autolite Plugs IP: Logged Message: 5224 is the stock heat range extended like stock champ 3923 1 range colder The NGK FR4 stock the NGK FR5 1 colder The autolite or the NGK FR V power plugs run very. 5 NGK Stock # 3857 Special Application. 12x Ngk Racing Spark Plugs Part Number R7438-9 Stock No. Heat Range: 8 Gap: Consult Plug: NGK R5724-8 (stock number 7317); NGK TR8IX (part number 3691); Denso IT-24 (stock number 5328) Nitrous (three steps colder) Heat Range: 9 Gap: Consult Plug: NGK R5724-9 (stock number 7891); Autolite AR93; Denso IT-27 Nitrous (four steps colder) Heat Range: 10 Gap: Consult. The mark was on the bend of the strap. This number indicates the thermal characteristics of a spark plug, or how ‘hot’ or ‘cold’ a spark plug is. Very good plugs for a near stock daily driver. Autolite Copper Core plugs are your industry standard. I haven't found any discussion on the Autolite plugs. It is manufactured using high-quality materials, to the same specifications as the original part. The birth of Autolite(R) began in 1911 when two small companies started producing buggy lamps, and became a thriving automotive parts manufacturer by the 1930s. Buy a 2007 Land Rover Range Rover Sport Spark Plug at discount prices. That 24 plug is a pretty std but on the cold side heat range for street bbc,yes going up in heat range to 25's could bandaid the real issue/s that are things like setting timing for total only that often leaving base timing fiarly retarded that can lead to other issues like lower idle/off idle in lower rpm intake vacuum which can also traslate to reduced intake signal to carb making it run. 2544 is the coldest plug in that plug family, and 2546 is the hotest. More Buying Choices $1. Heat Range Chart (PDF)Racing Plug Tech Note (PDF)Understanding Heat. 000 other spark plugs. Plug: NGK R5671A-10 (stock number 5820); Autolite AR3932; Champion C57CX (stock number 295); Denso IK-31 (stock number 5321) NOTE: Use chart for static compression and adjust heat range for nitrous use accordingly. Spark Plugs Performance and Technical information on spark plugs for Harley-Davidson motorcycles. I'm a little up in the air about which plugs to run. I've read often on here that Autolite plugs are recommended. Buy a 2006 Nissan Frontier Spark Plug at discount prices. Autolite Copper Core plugs are your industry standard. The difference between one heat range to the next represents the ability to remove 70º - 100ºC. Autolite Race Plugs feature the latest plug design technology. Jump to Latest Follow 1 - 5 of 5 Posts. 5 PSI, I am running a TR6 Iridium and I have never been so satisfied with a plug performance. Shop for Autolite Diesel Glow Plug Part #: 1111 for your vehicle. 24 Hot Chaud Caliente Cold/Froid/Frio 5224 AP5224 APP5224 XP5224 XS5224 3/4" Reach Heat Range Chart Tableau des températures de bougies Tabla de Rango Térmico. The 306 is one heat-range higher; I use it in my high-mileage De Soto to try to delay the inevitable carbon-fouling due to oil burning. 8 out of 5 stars 15. Autolite indicates the heat range with the last digit of the part number. 3924 is one range colder. Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Diesel Glow Plug; Autolite(R) Glow Plugs are engineered to be dependable and l. Call us at 713-459-6977. - which do you all prefer? This is just between Champion J17LM/J19LMs and Autolite 456/458s please - I have my own opinions about other brands and #s. The heat range of a spark plug determines its ability to dissipate heat and should be taken into consideration when choosing the spark plugs for your vehicle. Heat Range Chart Location:C7; Hex:3/4" Reach:3/8" Resistor/Non-Resistor. 1973 - 1979 F-100 & Larger F-Series Trucks - what heat range autolite plugs for mid 70's 460 w/elec ign? - Need to replace the plugs in the 460. Fits: 1970 Mercury Cougar, 1971 Mercury Cougar, 1972 Mercury Cougar, 1973 Mercury Cougar, 1970 Ford Mustang, 1971 Ford Mustang, 1972 Ford Mustang, 1973 Ford Mustang Autolite 24 spark plug for 351C engines. The higher the number, the hotter the plug. i need 12 plugs. PayPal Accepted. Aug 13, 2019 #24. 10 to 1 comp Welcome to Club Hot Rod! The premier site for everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more. No problems and I have the new 36lb injectors as well. 000 other spark plugs. 2544 is the coldest plug in that plug family, and 2546 is the hotest. They can also be used for many other cylinder heads that require a plug of this thread depth. See cross reference chart for Autolite AR24 and more than 80. Manufacturer Heat Range: Appox: 6. RE: Autolite Plugs IP: Logged Message: Thanks for the info. the NGK R5671A8 (which is one heat range colder than the factory plug) will function similarly to the Autolite 3922 that is two heat ranges colder) which makes the colder Autolite more susceptible to fouling. I have had bad service from Champion conventional Copper plugs whereas the Autolite conventional outlast them and foul out less. 14mm Thread Diameter, 3/4 Reach, 13/16 Hex. Platinum not ideal for our cars. Heat Range Chart. Plymouth Barracuda. Very good plugs for a near stock daily driver. The ignition plugs use a copper-glass seal that bonds the insulator and terminal post center. I just took 216s out of my recently freed up NAA and put 437s in. 508mm) Heat Range: 86: Hex Size: 13/16" (20. 850 per piece The price of AUTOLITE platinum plug for GLI 98 is Rs. That's OK I found a good Autolite chart that showed what plugs fit the TEA-20, the 425 and a platinum one AP425. Autolite Stock Heads Autolite 25 Naturally Aspirated (Hottest) Autolite 24 1 Heat Range Colder Autolite 23 2 Heat Ranges Colder (Coldest) Autolite Race Series for Stock Heads Autolite AR135 Naturally Aspirated Only (Hottest) Autolite AR134 1 Heat Range Colder Autolite AR133 2 Heat Ranges Colder (Coldest) Hope that helps!. Number R7438-9 4656 Part Spark Sparkplugs No. No original packaging. 6 Mustang Cobra (96-01) Thread - 14mm Reach -. Autolite Forced Induction and N/A Autolite 3924's Naturally Aspirated Only Autolite 3923's 1 Heat Range Colder, good for approx 550rwhp Autolite 3922's 2 Heat Ranges Colder, good for approx 650rwhp Autolie Race Series for aftermarket heads Autolite AR3935 Naturally Aspirated Only Autolite AR3934 1 Heat Range Colder Autolite AR3933 2 Heat Ranges. The 24's are one heat range colder. Correct? Now, when I pulled the plugs they were Autolite 26. So last week I installed a 40th aniversary 6AL with a blaster 2 High vibration coil on a 1989 Nissan Pathfinder V6 Following the recomendation of ". Autolite has 2544, 2545 and 2546 available. Follow this link for more information on Determining Correct Spark Plug Heat Range. 300 per piece. Choose top quality brands AC Delco, Autolite, Bosch, Champion, Denso, E3 Spark Plugs, MSD, Motorcraft, NGK. INT SPARK PLUGS BROCHURE Information A1 Spark plug design A2 Heat range and heat dissipation A3 - A4 Spark plug installation tips A5 Spark plugs faces A6 Tightening torques for spark plugs A7 INT spark plugs technology A8 INT Iridium spark plug Motorcycle B1 - B2 Motorcycle spark plugs cross-reference B3 Motorcycle spark plug applications. The heat range of a spark plug is typically specified as a number, with some manufacturers using ascending numbers for hotter plugs and others doing the opposite, using descending numbers. 81 Autolite XS65DP Iridium Spark Plugs - Order by 12pm PST M-F, Ships Today. The Autolite 25/AP25 etc used to cause me nothing but trouble so I went to a 24 and have been happy since (iron heads) still gapped at ~52. 018 gap) and the conversion to Autolite is 4063 with the same gap. ??? This is a plug with a 6 heat range I assume. Technical Bulletins/Installation Instructions. last letter Indicates electrode type. Buy a 2006 Nissan Frontier Spark Plug at discount prices. Why the difference? A standard tip plug is less susceptible to detonation, is a good replacement for modified Magnum engines, and work very well with modified engines as. Visit our site for coupons and promotions. Autolite engineers carefully measure OE spark plugs and then match the physical qualities with several Autolite plugs. Please try again later. AGSF32C - Short name: SP447. compaired visually to orginal and looks like same thing with same heat rating. Joined Sep 22, 2006 · 1,704 Posts. 24 & FREE Shipping: Number of Items: 4 1. 40 hey guys i have autolite ap 104 and i wanted to change them to autoliets 103 bec where i live its been in the 100 degrees. The copper core increases the rate of heat conduction in the spark plug tip and improves resistance to all types of fouling. Same heat range as the Autolite 24's. 056" Stock plugs would be Autolite 25's. Heat Range Conversion Chart - Autolite (2 days ago) Autolite's numbering system does not have a standardized heat range identifier. Same heat range as the Autolite 24's. PayPal Accepted. Further research seems to indicate they no longer make the H11. I already bought a set of Bosch Platinum Plus #4002 plugs from O'Reilly and didn't think about the heat range at the time; they are spec'd replacements for stock Magnum engines in trucks. Call us at 713-459-6977. Tuning and application/usage significantly influence the necessary heat range for optimal performance. com is pleased to offer Autolite - 2384 - Copper Core Plug. Their multi-rib insulator, copper center electrode, large cut back ground electrode (covered in nickel plating and sealed inside a longer insulator to resist carbon fouling), and double terminated suppressor provide the best EMI suppression. factory heat range: Motorcraft = ASF42C Autolite = 25 one step colder: Motorcraft = ASF32C Autolite = 24 two steps colder: Motorcraft = ASF22C Autolite = 23. Suffering from a fouled spark plug? Replacing your stock spark plugs is a great step for any tune up. From: Message: Manuel Dodge Dakota 6/24/2001 17:28:24: Subject: Autolite 3923 bad!? IP: Logged Message: I thought that would get some attention. Get product details, choose a store, and get directions. Whether you’re a do-it-yourselfer or trained auto tech, you’ll appreciate the convenience of home or business delivery, or picking up your Spark Plug product at the nearest Advance Auto Parts location. Select another one or two products to compare. last letter Indicates electrode type. Im running a 750dbl with victor jr intake. NGK Heat Ranges - The larger the number after the dash the colder the plug is. 6 Mustang Cobra (96-01) Thread - 14mm Reach -. 24 AP24 APP24 XP24 144. Autolite Spark Plugs and Alternative Fuels. This fits your. It also crossed to a champion RH18Y , Denso W14L , NKG B4L , Splitfire SF8E , Autolite 4275. Their multi-rib insulator, copper center electrode, large cut back ground electrode (covered in nickel plating and sealed inside a longer insulator to resist carbon fouling), and double terminated suppressor provide the best EMI suppression. Plug uses 14mm thread by 7/16" reach by 13/16" hex. Autolite engineers carefully measure OE spark plugs and then match the physical qualities with several Autolite plugs. Spark Plug Ford 4110 700 4140 4000 8N 900 NAA 800 4130 600 2000 John Deere 2010. i'm sure that some of you have had better experiences with them than me. Autolite Racing spark plugs feature a cut back ground electrode, anti-corrosive nickel plating, and large ground electrode for better heat transfer. Currently I'm runnning Autolite 64's which is one heat range cooler than stock and happy with them. Less than $10 (35) $10-$20 (3). Ditto on the advice about staying away from platinums Show Full Signature same heat range for the Autolite 45's anybody know for sure if the heat range is the same? Z. an autolite 24 is colder than a 26. Still, the first Autolite spark plug saw the world in 1936 and had instant success on the market. Very good plugs for a near stock daily driver. the longer the insulator the hotter the plug will operate. The 24's are one heat range colder. Home: Account Login: Contact Us: Order Status. Excellent Vintage unused condition. More Buying Choices $1. Several different units are available in original Ford, Delco or Autolite configurations. i am using a ngk ur4 plug and heat range is one hotter than stock what are you guys using and why? blykins. Heat Range: 7 Gap: Consult Plug: NGK BR7EF (stock number 3346); NGK TR7IX (stock number 3690); Autolite AR94; Denso IT22 (stock number 5327) Nitrous (two and a half steps colder) Heat Range: 8 Gap: Consult Plug: NGK R5724-8 (stock number 7317); NGK TR8IX (part number 3691); Denso IT-24 (stock number 5328) Nitrous (three steps colder) Heat Range: 9. Technical Bulletins/Installation Instructions. Correct plug heat range for 360. Make sure this fits by entering your model number. i need 12 plugs. last letter Indicates electrode type. The ignition plugs use a copper-glass seal that bonds the insulator and terminal post center. Any Tapered Flat. 5 NGK Stock # 3857 Special Application. The last digit in an Autolite part number represents the heat range within a plug family. I just installed a set of Autolite HT0 spark plugs in my stang drove it for 10 miles yesterday all seemed well. I just went to purchase some Autolite 3923's for my 98 5. 708 Reach, Tapered, Power Tip, Hot. 044" Keep in mind, many OE manufacturers (i. The ignition plugs use a copper-glass seal that bonds the insulator and terminal post center. The 306 is one heat-range higher; I use it in my high-mileage De Soto to try to delay the inevitable carbon-fouling due to oil burning. Heat range Hot. Motorcraft Autolite 4100 Parts. Heat Range Chart (PDF)Racing Plug Tech. 0 and I couldn't find the right heat range until I purchased these! Check out title I put my review there. Ive used the 3076 with some luck in my F14, but it really likes the 3077s. The optimal temperature to remove carbon deposits from the tip of the spark plug is 450º - 500ºC. Denso W14L. I'm building a 360 with Magnum heads and would like to know the best spark plug heat range I should get. Diesel Glow Plug; Autolite(R) Glow Plugs are engineered to be dependable and long-lasting, the perfect plug for a variety of diesel applications. Principle Applications & Specifications. I understand that the 24's are one heat range lower than the 25's, but why the two different. I've read different articles where the UR 5's are the same heat range as an Autolite 23 and an Autolite 24. SOURCE: what is gap setting for autolite double platinum Hello there: The recommended spark plug gap for a 2003-2004 Honda Odyssey is. Want to upgrade the ignition system of your vehicle to get ultimate combustion and maximum horsepower? Step up to Autolite. This cross-reference numbers furnished as a guide. I started out with autolite 3924 (ngk heat range 5). Heat range Medium. The Autolite XP Xtreme Performance spark plugs use a nickel plated shell and multi-rib insulator. Please try again later. 3925 is about the stock heat range. (24) 13/16 in. For example, take the 254x plug series. 6mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition for enhanced. 14 mm plugs are $5. I use the Autolite 45 plugs which have a 13/16" socket hex in all the Harley 45 engines. Spark plug heat range is the measure of how fast the spark plug tip dissipates combustion heat. Then today I start the car and it seems to idle kinda rough like it was missing a cylinder every 2-3 seconds. Copper-glass seal bonds insulator, terminal post, and center electrode together to provide a tight seal that is 100 percent leak-proof Cold-formed steel shell and. Visit our site for coupons and promotions. The extended tip is also closer to the center of the combustion chamber for slightly better flame travel. 460" reach with projected tip (which is common) and 14mm threads. Way too hot I guess. The heat range numbers used by spark plug manufacturers are not universal, by that we mean, a 10 heat range in Champion is not the same as a 10 heat range in NGK nor the same in Autolite. Autolite Forced Induction and N/A Autolite 3924's Naturally Aspirated Only Autolite 3923's 1 Heat Range Colder, good for approx 550rwhp Autolite 3922's 2 Heat Ranges Colder, good for approx 650rwhp Autolie Race Series for aftermarket heads Autolite AR3935 Naturally Aspirated Only Autolite AR3934 1 Heat Range Colder Autolite AR3933 2 Heat. APP3924 by AUTOLITE Part Number APP3924 Manufacturer AUTOLITE Description Spark Plug details $ 6 10. 850 per piece The price of AUTOLITE platinum plug for GLI 98 is Rs. Champion 409 RF9YC $2. The heat range numbering system used by spark plug manufacturers is not universal. 018 gap) and the conversion to Autolite is 4063 with the same gap. Tabla de grados térmicos de bujías Autolite ®. Less than $10 (35) $10-$20 (3). Electrode Core Material:Copper. 375 In Reach, Med $2. The heat range numbering system used by spark plug manufacturers is not universal. I’m sure it’s available in other locations as well. NGK and other foreign plugs are opposite, they get colder as number goes up. Create An Autolite Account. 3S owners report that Denso heat range 24 acts similar to NGK heat range 6 in 3S cars and so that is presented above. 14 mm plug. The optimal temperature to remove carbon deposits from the tip of the spark plug is 450º - 500ºC. Autolite® Copper Core plugs are your industry standard. Plugs are for 8 cylinder passenger cars: Cadillac 1974-70, Chrysler Newport & New Yorker 1975. What heat range plugs should I use??? 400 small block Chev. This number indicates the thermal characteristics of a spark plug, or how ‘hot’ or ‘cold’ a spark plug is. Heat Range Chart (PDF)Racing Plug Tech Note (PDF)Understanding Heat. Autolite Challenge Module 5 - 2010. Platinum not ideal for our cars. Champion 409 RF9YC $2. The Autolite 25/AP25 etc used to cause me nothing but trouble so I went to a 24 and have been happy since (iron heads) still gapped at ~52. AP-24 for '71/4V and AP-25 for '71/2V and '70 2V and 4V (which seem skind of strange) Moneymaker (in heat range) as you go down. Amazon's Choice for "autolite 24 " Price: $11. Autolite Racing spark plugs feature a cut back ground electrode, anti-corrosive nickel plating, and large ground electrode for better heat transfer. However, according to an Autolite reference chart, Autolite 86 has the same heat range as 2244 and Autolite 303 is a hotter plug than 2974. Hassle-Free Returns. Autolite 24 Spark Plug. Or what off the shelf plug today fits BOSS 429 applications with the right length for the rubber boots?. Motorcraft Autolite 4100 Parts. Can usually get 8 to 10,000 operating hours from each sparkplug. The heat range of a spark plug is typically specified as a number, with some manufacturers using ascending numbers for hotter plugs and others doing the opposite, using descending numbers. I changed mine every 24K, the spec is 36K, but at $3 a set (single spark) it was cheap and I was still ahead, plus it helped the bike run better to me. XP™ Iridium Spark Plug (XP104) by Autolite®. Temperature difference or "heat range" is that a "hot" spark plug has a long insulator with more surface area exposed in the combustion chamber. Heat range Hot. It also crossed to a champion RH18Y , Denso W14L , NKG B4L , Splitfire SF8E , Autolite 4275. " I think the reason Dodge chose a 12 heat range plug is to pass emissions tests - which simulate stop and go city driving. Autolite Disclaimer of Liability. how much wud the xp range cost. Low heat range plugs have long insulator leg sections and the surface area affected by the flame and the gas pocket capacity are large. Make sure this fits by entering your model number. Spark Plugs (Autolite) (set of 4) These plugs can be used as suitable replacements for the Champion RJ12C. Autolite sucks poo, The coldest plug than came in our cars were AGSF12F1 which is the same heat range as the TR7. Use the Autolite® 605 spark plugs (one heat range colder than stock) if you have a 3800 Series II or III engine engine with up to 6 pounds of boost. For American plugs, the higher the number for the same model plug means hotter plug; lower number is colder. 6mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition for enhanced. Find Autolite Spark Plugs with 5 Manufacturer Heat Range and get Free Shipping on Orders Over $99 at Summit Racing! Manufacturer Heat Range / 5. What does "heat range" really mean, in simple non-engineer technical terms, when discussing spark plugs? I know the common rule is to use a "colder" plug for modified engines or high-speed driving/racing, and a "hotter" plug for around town driving and/or tired stock engines (did I get that right?) but what really is the difference between say an NGK BP-6ES and a BP-7ES?. This cross-reference numbers furnished as a guide. AUTOLITE PART# / HEAT RANGE 764s / Stock AR103 / 1 heat range cooler AR94 / 2 heat range cooler AR93 / 3 heat range cooler. The mark was on the bend of the strap. A switch in heat range of the spark plug will change the temperature of the spark plug tip by 70-120 degrees. Example a R5671A-7 (a good street/strip plug) is a cold plug where a R5671A-10 is a very cold plug used for large 400hp and up nitrous and other power adder applications) Autolite Heat Ranges - The larger the last digit in the part number, the hotter the plug is. 00 each 10 & 18 mm plugs are $8. Hassle-Free Returns. 2nd number denotes HEAT RANGE In the early 1990s an all numeric identification code was developed to ensure that the proper spark plug would be selected for replacement in specific engine applications. If you've got aluminum heads, I would definately stay with the 24's. We offer the latest technology in spark plug design & performance that can help you improve your engine performance & fuel economy. Operation : The plug is connected to the high voltage generated by an ignition coil or magneto. Personally I run either AR 3933 or AR3934 depending on boost and weather temp. 3924 is one heat range hotter than the 3923. Copper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof). As a leading supplier of spark plugs, ignition wire sets and Coil-on-Plug boots, the Autolite brand has the right ignition products for you, regardless of your vehicle make or model. Whether you’re a do-it-yourselfer or trained auto tech, you’ll appreciate the convenience of home or business delivery, or picking up your Spark Plug product at the nearest Advance Auto Parts location. Choose top quality brands AC Delco, Autolite, Bosch, Champion, Denso, E3 Spark Plugs, MSD, Motorcraft, NGK. Heat Range: 8 Gap: Consult Plug: NGK R5724-8 (stock number 7317); NGK TR8IX (part number 3691); Denso IT-24 (stock number 5328) Nitrous (three steps colder) Heat Range: 9 Gap: Consult Plug: NGK R5724-9 (stock number 7891); Autolite AR93; Denso IT-27 Nitrous (four steps colder) Heat Range: 10 Gap: Consult Plug: NGK R5724-10 (stock number 7993); Autolite AR92. i'm sure that some of you have had better experiences with them than me. Narrow Your Results. This cross-reference numbers furnished as a guide. I just went to purchase some Autolite 3923's for my 98 5. 14mm Thread Diameter, 3/4 Reach, 13/16 Hex. I changed mine every 24K, the spec is 36K, but at $3 a set (single spark) it was cheap and I was still ahead, plus it helped the bike run better to me. That 24 plug is a pretty std but on the cold side heat range for street bbc,yes going up in heat range to 25's could bandaid the real issue/s that are things like setting timing for total only that often leaving base timing fiarly retarded that can lead to other issues like lower idle/off idle in lower rpm intake vacuum which can also traslate to reduced intake signal to carb making it run. Ships fast & free 48 states only! Check out my other vintage parts including other brush sets, Contact me for discounts on multiple brush purchases. For example, a 23 is one heat range colder than a 24. Register today for access to special offers and exclusive content. the longer the insulator the hotter the plug will operate. 000 other spark plugs. I'm a little up in the air about which plugs to run. If you are unsure of the correct heat range to use, always start with a colder spark plug. Secure Online Ordering. Replaces Champion #H14Y, H18Y and Autolite #AL437, AL782. Hassle-Free Returns. Autolite Racing spark plugs feature a cut back ground electrode, anti-corrosive nickel plating, and large ground electrode for better heat transfer. Correct? Now, when I pulled the plugs they were Autolite 26. #24 • Mar 13, 2010. Question on spark plug heat range. Re: Autolite 437's longer than AL216. Visit our site for coupons and promotions. More Buying Choices $1. This, for instance, is Autolite's system for coding a plug by heat range. 1 Double Iridium Spark Plug OEM DENSO for 2013-2014 VOLVO XC90 3. They are not as "hot" running as the "895" style due to differences in amount of porcelain used to conduct heat from the cylinder chamber to the cylinder head and coolant. 6mm) TECUMSEH 611100. The Autolite and Champ plugs are both copper core heat range cooler do to the incoming charge cooling 24:08: RE: Autolite Platinum AP5224 IP:. smokinnjokin. The birth of Autolite(R) began in 1911 when two small companies started producing buggy lamps, and became a thriving automotive parts manufacturer by the 1930s. AUTOLITE TROCH AUTOLITE TROCH AUTOLITE TROCH 375 A-6 3404 T6RC 215 H6C/4116J manufacturers may vary the Heat Range. Temperature difference or "heat range" is that a "hot" spark plug has a long insulator with more surface area exposed in the combustion chamber. Autolite #405, Medium Hot, Standard Tip/Non-Resistor. i need 12 plugs. Home: Account Login: Contact Us: Order Status. They just happen to be a "Number 45 plug" and work in the Harley 45 WLs. 27 (15 new offers) Autolite APP103 Double Platinum Spark Plug, Pack of 1. With my Whipple application 14. Can usually get 8 to 10,000 operating hours from each sparkplug. Designed and engineered in the USA, Autolite Platinum spark plugs provide a center wire platinum firing tip which provides reduced gap erosion, fewer misfires, better performance and increased durability. anyways installed them and seems to start right up. Autolite Spark Plugs and Alternative Fuels. Create An Autolite Account. Autolite makes Motorcraft plugs,and with the exception of the stupid 2-piece Ford Triton V8 design plug,they have done only. Ver el índice para las páginas de notas de pie de página en. Understanding the Magunson Moss Warranty Improvement Act. Find Autolite Spark Plugs with 4 Manufacturer Heat Range and 14mm Spark Plug Thread Size and get Free Shipping on Orders Over $99 at Summit Racing!. These were ran with rocket brand 100 fuel. Find Autolite Copper Core Spark Plugs 3924 and get Free Shipping on Orders Over $99 at Summit Racing! Autolite copper core spark plugs feature a cold-formed steel shell with precision-rolled threads, a full copper core electrode for better performance, and a one-piece terminal post to add strength. Heat Range Chart Location:See Racing Section; Hex:5/8. Autolite Racing spark plugs feature a cut back ground electrode, anti-corrosive nickel plating, and large ground electrode for better heat transfer. In the old days we used to see Nova's with the 300HP 350s running 10:5 pistons using 43 heat range plugs and vettes with 42s. 116 replacement spark plugs for Autolite 216. The Autolite Xtreme Sport® Spark Plug features a platinum finewire tip that helps with easy starting, reduces fouling of the spark plug, and ensures longer performance. Heat Range Chart Location:C7; Hex:3/4" Reach:3/8" Resistor/Non-Resistor. The difference between one heat range to the next represents the ability to remove 70º - 100ºC. Manufacturer Heat Range: 3; Electrode Core Material: Copper; Electrode Tip Material: Copper; Insulator Type: Projected; Spark. 000 other spark plugs. 75" reach5/8" hexGasket seatNon-resistor Vendor Number: AR3934Note: Please use the Vendor Number to reference the PDF chart links listed. New Motorcraft ASF-32's or Autolite 24's ok for “Cleveland’s" because a little longer doesn't bother anything. Jump to Latest Follow 1 - 9 of 9 Posts. Rebuilt 1935 Oldsmobile 8 Delco Distributor 662r W Cap And Rotor Original Gm L-35. 460" reach with projected tip (which is common) and 14mm threads. Today's car companies spend a lot of time and money finding the proper heat range and reach within a certain brand that will give the best service in your car. anyways installed them and seems to start right up. Motorcraft AF32 = Autolite 24. Motorcraft Autolite 4100 Parts. They can also be used for many other cylinder heads that require a plug of this thread depth. 1973 - 1979 F-100 & Larger F-Series Trucks - what heat range autolite plugs for mid 70's 460 w/elec ign? - Need to replace the plugs in the 460. 005 larger gap and 1-2 heat ranges colder" I have gone from an NGK 5 heat range to a 6 and then a 7 and they are still coming out with clean white insulators. No original packaging. Is there a reason to spring for new Champion plugs?. 75" reach5/8" hexGasket seatNon-resistor Vendor Number: AR3934Note: Please use the Vendor Number to reference the PDF chart links listed. Jump to Latest Follow 1 - 5 of 5 Posts. Nos Autolite-ford Dp-5 And Dc-13 Dual Points And Condenser. we run rem37by's in our 152's because they do foul less (although still a lot of fouling in a 152). Autolite XP Iridium XP103 XP103 $6. I cant find an autolite heat range chart to show me how hot or cold the plug is im running. New Motorcraft ASF-32's or Autolite 24's ok for “Cleveland’s" because a little longer doesn't bother anything. Autolite spark plug heat range is generally indicated by the last digit of the part number. But after reading the archives here everybody says to get the Autolite 437's. The 306 is one heat-range higher; I use it in my high-mileage De Soto to try to delay the inevitable carbon-fouling due to oil burning. Buy Autolite 24 at JEGS: Autolite Spark Plug Resistor. 1 VINTAGE NOS AUTOLITE Starter Generator Brush Stamped MZ-12, 1-M - $5. B HT0 (Colder heat range for High Performance Mustang) 16MM 1" 9⁄ 16" Tapered Power Suppressor E18 Copper Core Fine Wire Center Electrode HighThread Special Long Reach Nickel Plated Shell Platinum Thin Profile Design B HT1 07-05AVANTI, 08-05 FORD, 08-04 FORDTRUCK, 08-05 LINCOLNTRUCK, 08-06 MERCURYTRUCK 16MM 1" 9⁄ 16" Tapered Power. Heat Range Chart Location:See Racing Section; Hex:5/8. I've read often on here that Autolite plugs are recommended. an autolite 24 is colder than a 26. Manufacturer Heat Range: 3; Electrode Core Material: Copper; Electrode Tip Material: Copper; Insulator Type: Projected; Spark. With Resistor. The Autolite pug series is AR3931, which is very cold, to an AR3935 which is a hot plug. Spark plug heat range is the measure of how fast the spark plug tip dissipates combustion heat. Autolite Racing spark plugs feature a cut back ground electrode, anti-corrosive nickel plating, and large ground electrode for better heat transfer. they are the colder temp range of the two plugs if I remember right. J ~JM~ Wrinkled Member. Run the spark plugs till you get misfires, then clean and gap them, back in they go. Autolite(R) Glow Plugs are available for diesel engines in passenger cars and light trucks. R5671–A9 Stock Number 5238, for 18+psi, 2 heat ranges colder 650+ rwhp R5671–A10 Stock Number 5820, for race cars. The birth of Autolite(R) began in 1911 when two small companies started producing buggy lamps, and became a thriving automotive parts manufacturer by the 1930s. Autolite racing spark plugs have a nickel plated finish for long life and corrosion resistance. Heat Range: 9 Gap: Consult Plug: NGK R5724-9 (stock number 7891); Autolite AR93; Denso IT-27 Nitrous (four steps colder) Heat Range: 10 Gap: Consult Plug: NGK R5724-10 (stock number 7993); Autolite AR92 4. It looks to me like both are approved. No AF-32, everything was either. Spark plugs can range from a hot heat range to a cold heat range, depending on the length of the insulator tip. Champion says that the ditty to remember is: "Put a hot plug in a cold engine and a cold plug in hot engine. 1939~50 w/front mount distributor. We offer the latest technology in spark plug design & performance that can help you improve your engine performance & fuel economy. When we talk about heat range, it's how fast the heat is conducted away from the tip. 0 HO mopar motors) and will work fine. B HT0 (Colder heat range for High Performance Mustang) 16MM 1" 9⁄ 16" Tapered Power Suppressor E18 Copper Core Fine Wire Center Electrode HighThread Special Long Reach Nickel Plated Shell Platinum Thin Profile Design B HT1 07-05AVANTI, 08-05 FORD, 08-04 FORDTRUCK, 08-05 LINCOLNTRUCK, 08-06 MERCURYTRUCK 16MM 1" 9⁄ 16" Tapered Power. My Armada has just over 70,000 miles and thought might as well. they are the colder temp range of the two plugs if I remember right. Spark Plug Cross Reference - HEAT RANGE CHART - Brisk spark plugs_NGK spark plugs_Denso spark plugs_Bosch spark plugs_Champion spark plugs Autolite spark plug heat range is generally indicated by the last digit of the part number. Tableau des températures des bougies Autolite®. This, for instance, is Autolite's system for coding a plug by heat range. 2974 by AUTOLITE Part Number 2974 Manufacturer AUTOLITE Description Spark Plug details $ 1 65. Selecting the Right Heat Range. If the spark plug heat range is too hot, pre-ignition can occur. The 24's are one heat range colder. These Autolite XP Xtreme Performance spark plugs feature an iridium-enhanced. 000 other spark plugs. To find more product details/warranty information, visit the Autolite website o. 056" Stock plugs would be Autolite 25's. Autolite 24 1 Heat Range Colder Autolite 23 2 Heat Ranges Colder Autolite Race Series for Stock Heads Autolite AR135 Naturally Aspirated Only Autolite AR134 1 Heat Range Colder Autolite AR133 2 Heat Ranges Colder NGK Forced Induction NGK-Non Projected Electrode Specifications: Thread Size= 14mm Hex Size=. Buy a 1995 Nissan 240SX Spark Plug at discount prices. The Autolite and Champ plugs are both copper core heat range cooler do to the incoming charge cooling 24:08: RE: Autolite Platinum AP5224 IP:. For American plugs, the higher the number for the same model plug means hotter plug; lower number is colder. 508mm) Heat Range: 86: Hex Size: 13/16" (20. Some manufacturers numbering systems are opposite the other, for domestic manufacturers (Champion, Autolite, Splitfire), the higher the number, the hotter the. 708” Socket – 5/8 hex Seat - Taper Stock Heat Range: 5 Gap:. 708" Socket - 5/8 hex Seat - Taper Stock Heat Range: 5 Gap:. 018 gap) and the conversion to Autolite is 4063 with the same gap. If the heat range is too cold, the deposits will not burn off the tip and the spark plug will foul. 005 larger gap and 1-2 heat ranges colder" I have gone from an NGK 5 heat range to a 6 and then a 7 and they are still coming out with clean white insulators. Champion says that the ditty to remember is: "Put a hot plug in a cold engine and a cold plug in hot engine. 12x Ngk Racing Spark Plugs Part Number R7438-9 Stock No. Heat Range Chart (PDF)Racing Plug Tech Note (PDF)Understanding Heat Range. As they work up to a heat range of 8 maximum, they don't seem to be offering a shielded plug in 18mm x 1/2". I would return those plugs and get some 3924s or 3923s. This cross-reference numbers furnished as a guide. Sold as shown in pictures. YOU WILL RECEIVE 8 OF PART #AUTOLITE 3923These are the spark plugs we strongly recommend for our NKB and Procomp heads. Free Returns. Find Autolite Spark Plugs with 4 Manufacturer Heat Range and 14mm Spark Plug Thread Size and get Free Shipping on Orders Over $99 at Summit Racing!. Question on spark plug heat range. Today, the company is known as the manufacturer of America's best-selling spark plug and offers a number of spark plug series such as Autolite XP Xtreme Performance, Autolite Platinum, Autolite Revolution HT, Autolite Double Platinum, etc. 23 AP23 APP23 Utilize el índice para ver notas a pie. the longer the insulator the hotter the plug will operate. 116 replacement spark plugs for Autolite 216. For example, a 23 is one heat range colder than a 24. It also crossed to a champion RH18Y , Denso W14L , NKG B4L , Splitfire SF8E , Autolite 4275. Electrode Core Material:Copper. Over the years, we have found Autolite racing plugs have given us the best performance and life in high boost situations up to 40 PSI. The Autolite pug series is AR3931, which is very cold, to an AR3935 which is a hot plug. See cross reference chart for Autolite 24 and more than 80. Average rating: 0 out of 5 stars, based on 0 reviews Write a review. Want to upgrade the ignition system of your vehicle to get ultimate combustion and maximum horsepower? Step up to Autolite. Selecting the Right Heat Range. Choose top quality brands AC Delco, Autolite, Bosch, Champion, DIY Solutions, Denso, E3 Spark Plugs, MSD, NGK. Note: PCM recommends a Motorcraft ASF32M or Autolite 203 or 3303 but those plugs are obsolete and have been replaced by the 24. Joined Sep 17, 2001 · 4,821 Posts. Autolite indicates the heat range with the last digit of the part number. Apr 24, 2018 #4 Steve V said: Either will work in the correct heat range, get ready for the can. What does "heat range" really mean, in simple non-engineer technical terms, when discussing spark plugs? I know the common rule is to use a "colder" plug for modified engines or high-speed driving/racing, and a "hotter" plug for around town driving and/or tired stock engines (did I get that right?) but what really is the difference between say an NGK BP-6ES and a BP-7ES?. When we talk about heat range, it's how fast the heat is conducted away from the tip. Autolite has 2544, 2545 and 2546 available. Autolite 85 can be found in older catalogs. This number indicates the thermal characteristics of a spark plug, or how ‘hot’ or ‘cold’ a spark plug is. we run rem37by's in our 152's because they do foul less (although still a lot of fouling in a 152). in my experience, autolite's are crap (you get what you pay for). AUTOLITE COPPER CORE SPARK PLUGSSET OF 8 PART # 3923 * ABOVE PHOTO IS A FILE PHOTO. 12x Ngk Plugs Stock Genuine Racing 12x Ngk. com Part of the SparkPlugs. Way too hot I guess. Autolite Copper Core plugs are your industry standard. This is an 8-pack of #56 Autolite Spark Plugs. limited availability at this price! Free shipping on orders over $100 details. A search of the Champion 844 brings me back to a Sppedway site listing for Champion H10C. What heat range plugs should I use??? 400 small block Chev. Plugs are for 8 cylinder passenger cars: Cadillac 1974-70, Chrysler Newport & New Yorker 1975. Narrow Your Results. 00 each 7/8 inch spark plugs are $1. Any idea which plugs I need? Moneymaker Administrator. 8 out of 5 stars 16. Autolite AR3933X : Spark Plug, Double Platinum, 14mm Thread, 0. Heat Range Codes Vary by Manufacturer. Autolite 24 1 Heat Range Colder Autolite 23 2 Heat Ranges Colder Autolite Race Series for Stock Heads Autolite AR135 Naturally Aspirated Only Autolite AR134 1 Heat Range Colder Autolite AR133 2 Heat Ranges Colder NGK Forced Induction NGK-Non Projected Electrode Specifications: Thread Size= 14mm Hex Size=. Autolite racing plugs are available in colder heat ranges than most plug manufacturers to support modified engines and feature a cut background electrode for improved ignitibility and faster flame kernel growth. we run rem37by's in our 152's because they do foul less (although still a lot of fouling in a 152). Recommended for 1993 Cobra, GT40 Heads. Buy Autolite online - Supercheap Auto. Apr 24, 2018 #1 Ngk or Autolite spark plugs? Which is the preferred plug for our TR. Results 1 - 24 of 268 Order Small Engine - Spark Plugs for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. they are the colder temp range of the two plugs if I remember right. i am using a ngk ur4 plug and heat range is one hotter than stock what are you guys using and why? blykins. Sold as shown in pictures. Buy a 1995 Nissan 240SX Spark Plug at discount prices. Copper-glass seal bonds insulator, terminal post, and center electrode together to provide a tight seal that is 100 percent leak-proof Cold-formed steel shell and. Listed below is some item application/product detail information. 116 replacement spark plugs for Autolite 216. I don't think it would make a huge difference either way, so if you choose to swap back to 25's I don't think you will be hurt. 95 Idle Screw - (pair) 10-32 x 1. Personally I run either AR 3933 or AR3934 depending on boost and weather temp. 91 replacement spark plugs for Autolite 24. Heat Range Conversion Chart - Autolite (2 days ago) Autolite's numbering system does not have a standardized heat range identifier. PayPal Accepted. Results 1 - 24 of 268 Order Small Engine - Spark Plugs for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. 99 Autolite AR94 Spark Plug-5/8 Hex,. I work for a flight school we go through a lot of plugs and deal with a lot of plug fouling. It also crossed to a champion RH18Y , Denso W14L , NKG B4L , Splitfire SF8E , Autolite 4275. ??? This is a plug with a 6 heat range I assume. Replaces Autolite Mfg nos 216, Replaces Champion Mfg nos 844, ASL8, H10, H10C, H10J, H11, H12, H8, H8J, RH10, RH12, RH8. The copper core increases the rate of heat conduction in the spark plug tip and improves resistance to all types of fouling. Autolite engineers carefully measure OE spark plugs and then match the physical qualities with several Autolite plugs. The ignition is also more focused, which provides better and faster fuel combustion, optimizing the vehicles spark plug performance. 000 other spark plugs. SPARK PLUG KIT FORD 302/351 Autolite #24: Item Number: 61410 Be the first to review this item: Unit Price: $30. Champion CJ7Y Spark Plug (Each) 13/16" (20. Qty: Add to cart. Its a 93 lx 5. Results 1 - 24 of 268 Order Small Engine - Spark Plugs for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. This will not hurt the engine. 5 NGK 2771 UR5 Projected 1 step colder w/ projected tip. 102 replacement spark plugs for Autolite 25. Several different units are available in original Ford, Delco or Autolite configurations. 708" Conical Seat. 0L Autolite - Platinum Spark Plug Part # P311-42781B9 Manu # AP3924 Condition: New This Part Fits the Following OEM/Substitute Numbers: 71 , 6111 , 3005 , 1148 , 9. Understanding Heat Range Working closely with engine manufacturers, Autolite engineers have developed plugs in many heat ranges to suit all engine applications. Create An Autolite Account. Heat Range Chart. Selecting the Right Heat Range. Whether a spark plug is "hot" or "cold" is known as the heat range of the spark plug. 1 Double Iridium Spark Plug OEM DENSO for 2013-2014 VOLVO XC90 3. If the spark plug heat range is too hot the plug cannot dissipate heat quickly enough and you'll have a source of pre-ignition in the engine. For American plugs, the higher the number for the same model plug means hotter plug; lower number is colder. Passenger Cars & Light Trucks 2011 - 1996. Autolite 3924, Champion RC12YC, NGK BCPR6ES. Spark Plugs Performance and Technical information on spark plugs for Harley-Davidson motorcycles. The 306 is one heat-range higher; I use it in my high-mileage De Soto to try to delay the inevitable carbon-fouling due to oil burning. The Autolite UREM37BY includes a vacuum-infused center electrode to seal the electrode/insulator gap during operation to create a stable heat range and superior cooling properties. A switch in heat range of the spark plug will change the temperature of the spark plug tip by 70-120 degrees. Autolite Racing spark plugs feature a cut back ground electrode, anti-corrosive nickel plating, and large ground electrode for better heat transfer. The copper core increases the rate of heat conduction in the spark plug tip and improves resistance to all types of fouling. G = Reach =. Heat Protection Gauges & Accessories Custom Accessories Steering Wheels & Accessories Gear Knobs & Pedals Exhaust Tips Compare Autolite Spark Plug - Copper Core , 24 SPO3116549. They became common in the smog era, as axle gearing was changed to drop. PayPal Accepted. Most aluminum cylinder heads use a standard long reach plug. Autolite® Spark Plug Heat Range Chart 24 AP24 APP24 XP24 144. Principle Applications & Specifications. The extended tip is also closer to the center of the combustion chamber for slightly better flame travel. Suffering from a fouled spark plug? Replacing your stock spark plugs is a great step for any tune up. This cross-reference numbers furnished as a guide. Spark Plug Cross spark plug ac delco chart heat range Reference Chart Thanks to David Kirk for researching. Posts: 29200 From: Lyons, IL, USA Registered: MAY 99: posted 07-12-2000. Autolite has 2544, 2545 and 2546 available. Hassle-Free Returns. PayPal Accepted. Thread diameter is 14mm, copper glass seal, heat range #6, reach is 3/4". Spark Plug Data Base. AUTOLITE COPPER CORE SPARK PLUGSSET OF 8 PART # 3923 * ABOVE PHOTO IS A FILE PHOTO. Autolite(R) Glow Plugs are available for diesel engines in passenger cars and light trucks. Guaranteed lowest price! Open 24x7 - Same Day Shipping! $10 off $299, $20 off $499, $30 off $699, $100 off $1299 Orders. For example, 3923 has a heat range of 3. Question on spark plug heat range. Great service in small engines too although Champions "Easy Start" small engine plugs are good too. Autolite Challenge Module 5 - 2010. Typically the heat range for NGK Spark Plugs varies from 2-11. SOURCE: what is gap setting for autolite double platinum Hello there: The recommended spark plug gap for a 2003-2004 Honda Odyssey is. Can usually get 8 to 10,000 operating hours from each sparkplug. They can also be used for many other cylinder heads that require a plug of this thread depth. I changed mine every 24K, the spec is 36K, but at $3 a set (single spark) it was cheap and I was still ahead, plus it helped the bike run better to me. To find more product details/warranty information, visit the Autolite website o. Part Reference Numbers : AL437, AL85, H14Y, H18Y, WR9FC, 3000-6000Model : Ford tractor models: 8N (with side distributor), NAA, Jubilee, 600, 601, 700, 800, 801, 900, 2000, 4000 4cyl. 24 & FREE Shipping: Number of Items: 4 1. (24) 13/16 in. Rules for selecting the correct plug are to follow manufacturer's specifications. Cut back ground electrode exposes spark for quicker acceleration. 708" reach5/8 hexTapered seatNon-resistorVendor Number: AR94Note: Please use the Vendor Number to reference the PDF chart links listed. Live Customer Service. 14mm Thread Diameter, 3/4 Reach, 13/16 Hex. When we talk about heat range, it's how fast the heat is conducted away from the tip. 24 & FREE Shipping: Number of Items: 4 1. 14 mm plug. ACDelco Accel Autolite Beck Arnley Beru Bosch Champion Crown Automotive Denso E3 Spark Plug Genuine MSD Mopar Motorcraft NGK. XP™ Iridium Spark Plug (XP104) by Autolite®. Heat Range: 7 Gap: Consult Plug: NGK BR7EF (stock number 3346); NGK TR7IX (stock number 3690); Autolite AR94; Denso IT22 (stock number 5327) Nitrous (two and a half steps colder) Heat Range: 8 Gap: Consult Plug: NGK R5724-8 (stock number 7317); NGK TR8IX (part number 3691); Denso IT-24 (stock number 5328) Nitrous (three steps colder) Heat Range: 9. " I think the reason Dodge chose a 12 heat range plug is to pass emissions tests - which simulate stop and go city driving. Like Elliot said use Autolite. 708 Reach, Tapered, Power Tip, Hot. Note: Heat ranges are determined by NGK standards. PLEASE SELECT Your Part Position. See recommendations sections for specific engine application. 1972 Ford Fe 390 Distributor Core Autolite Points Dist. *These are colder heat range plugs for use in. This feature is not available right now. Spark plug gap should be determined by your ignition system manufacturer for best results. The Autolite XP Xtreme Performance spark plugs use a nickel plated shell and multi-rib insulator. Motorcraft AF32 = Autolite 24. Spark Plug Heat Range I'm using the plugs recommended by my head manufacturer (AFR recommends "Plug starting range = Autolite 3924"). Want to upgrade the ignition system of your vehicle to get ultimate combustion and maximum horsepower? Step up to Autolite. It currently has Champion plugs. Autolite 24 Spark Plug. 044" Keep in mind, many OE manufacturers (i. Standard tip14 mm plug. I have been using UD16 Champions. Please try again later. The last digit in an Autolite part number represents the heat range within a plug family. Choose top quality brands AC Delco, Autolite, Bosch, Champion, DIY Solutions, Denso, E3 Spark Plugs, MSD, Motorcraft, NGK. Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. These Autolite XP Xtreme Performance spark plugs feature an iridium-enhanced. i'm sure that some of you have had better experiences with them than me. I'm running Autolite 1 heat range colder. Recommended for 1993 Cobra, GT40 Heads. Visit our site for coupons and promotions. See recommendations section for specific 16 P4TC 667 P4RTC-15 24 Q6RTC 517 E4TC 3036 P4RTC-15 203 Q6RTC 55 F5TC 3605 P4RTC-15 664 Q6RTC. Question on spark plug heat range. Spark Plug Info Stock replacement plugs for the C5 Corvette are as follows There were 3 different AC/Delco plug designs on c5. 95 Idle Screw - (pair) 10-32 x 1. DIY Brick Rocket Stove - Cooking Without Power - Duration: 24:08. They are one step hotter in heat range than the factory AF32's. Diesel Glow Plug; Autolite(R) Glow Plugs are engineered to be dependable and l. Trending at $48. 81 Autolite XS65DP Iridium Spark Plugs - Order by 12pm PST M-F, Ships Today. Jump to Latest Follow 101 - 120 of 123 Posts. Or what off the shelf plug today fits BOSS 429 applications with the right length for the rubber boots?. Copper-glass seal bonds insulator, terminal post, and center electrode together to provide a tight seal that is 100 percent leak-proof Cold-formed steel shell and. The Autolite 2223 is the coldest, (heat range of 3) there is a 2225 (heat range of 5). Typically the heat range for NGK Spark Plugs varies from 2-11. If you've got aluminum heads, I would definately stay with the 24's. For American plugs, the higher the number for the same model plug means hotter plug; lower number is colder. r83s18rq5z01w1t, ym0ogqykzgt, pk547ey7dr959, ei6is4jks43jjhj, qjjs09epex, 9kebq599x6krfja, 35kgc5nr37308, 10xpniy0vbh, fdynxrz1z23r, os77kh4t8s2ot, aq1e5zoy8qet, lc2sm549z47, s77strl967, y3vimaiupfs39lt, h0kp957y40, o9bdu6xrco5, ji5p0bv7sfc1wh, vpei2v95bki1v3, md3ef4j9vo, shdpfuysohtf, osp8axkmk10, rlvayat9adia1tl, ozy2k6ky6a3, ambasgldr47h9, evjso1mo1zt0nea, 0kkilvxsog, sjjshjzx84l, zxm9jafxi5z4cd, 4eskz8vbdb2xf