For example, 3923 has a heat range of 3. $4.42 Autolite AR3923 Racing Spark Plug - Same Day Shipping. But if Autolite AR 3924 is same heat range as 3924, the corresponding NGK racing plug part number seems to suggest it is a heat range 5. Part # 3923. Most aluminum cylinder heads use a standard long reach plug. Free Returns. 2544 is the coldest plug in that plug family, and 2546 is the hotest. Autolite Products Bosch Products Champion Products Denso Products E3 Products NGK Products NTK Products Spark Plug Cross Ref. SKU # 426099. check if this fits your vehicle ... Heat Range: 320: Reach (in) 0.75: Center Electrode Tip Material: Platinum: Center Electrode Core Material: Copper: Resistor: Yes: Read More. 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. Autolite 3923 - Autolite Copper Core Spark Plugs. AUTOLITE 3923. Spark plug gap should be determined by your ignition system manufacturer for best results. Are these Autolite plugs, small 5/8 with gasket seat? 3925s are for stock replacement. Autolite makes plugs for American, Japanese, European and Korean cars as well as plugs for Lawn & Garden and Power Sports. If you use Autolight plugs (1100/1150) they cost about $150 each, versus $10+ for the Bosch or NGK plugs. 1969. Free Returns. Refer to recommendation section for specific engine applications Comp. The heat range of a plug does not affect the power output of an engine. I have a blower and use 3923 (2 heat ranges colder) and I have Performer RPM heads. The '4' on the end of the Autolite part number is the temp range. Autolite: Autolite indicates the heat range with the last digit of the part number. (Just an For example, take the 254x plug series. The lower the number, the colder the plug. 426099. Est. Tuning and application/usage significantly influence the necessary heat range for optimal performance. PayPal Accepted. As this last digit decreases, the heat range becomes correspondingly one range colder. If they are, Autolite 3923 or 3924 and AC Fr3LS or Bosch 7557 may work if they are the heat range you … A "stock heat range" plug would be a 5 or 6 (higher is hotter). Autolite Copper Spark Plug 3923. Both the the pre-1990 4.0 I6 and the {less emissions} strict 8.0L Ram V10 use '9' heat range sparkplugs. What are the heat range part numbers for Autolite plugs? Below is a file photo. 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 1969. Spark Plug, Copper Core, Gasket Seat, 14mm Thread, .750 in. 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. You will rec. Secure Online Ordering. Guaranteed to deliver quick starts, good fuel economy and smooth acceleration, Autolite Copper Core spark plugs are designed to meet or exceed design requirements. Since 1936, Autolite has been a trusted leader and innovator in spark plug technology. Whether it's the top of the line Iridium XP Enhanced Alloy Technology(TM) spark plug, the Double Platinum Finewire with platinum-to-platinum firing or any of the other great products in our line, we will keep your car running at optimum levels. range. Find Autolite Spark Plugs 3 Manufacturer Heat Range and get Free Shipping on Orders Over $99 at Summit Racing! Est. For example, 3923 has a Heat Range of 3. Pinch with 2 fingers to zoom. AUTOLITE COPPER CORE SPARK PLUGS. Autolite Copper Spark Plug 3923. Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. The difference between the 5224 and 3923 plug is #1, Heat Range (3923 is one step colder) and #2, the tip on the 5224 is a "Special Power Tip". This is three Champion heat ranges cooler than the '12' heat range sparkplugs used in the Rams. I'm running Champion C61YC plugs, or AR3911 in an Autolite (same heat range) It runs pig rich idle on the street, at the track it cleans up but is still has a little carbon and a dark brown insulator. I HIGHLY RECOMMEND THESE IF YOUR GREEDY WITH YOUR BOOST … Chart is for racing plugs, so not a direct equivalent to NGK street plug part number. Work ... Paul, I'm a fan of autolites, they're cheap and get the job done well. I have a set of AFR 210 cylinder heads and AFR recommends starting with AR3910 Autolite plugs. Autolite 3923 - Autolite Copper Core Spark Plugs. This kinda adds to the evidence that a '9' heat range sparkplug may be the 'optimum' performance plug for the Magnum engines. PayPal Accepted. Much appreciated. So 4 is a notch or two colder than stock. Are those bosches you have platinum? Autolite has 2544, 2545 and 2546 available. I checked the plugs today after running it for one hour, mostly seating the rings type running, up and down the rpm range, with one good 1-2-3 blast at the end of the run. You can count on Autolite copper plugs for performance and value, backed by decades of experience and passion. Spark plug heat range is the measure of how fast the spark plug tip dissipates combustion heat. In other words, once the correct heat range is found that prevents fouling and does not contribute to the pre-ignition or detonation, a change to a hotter or colder plug will not have a positive effect on engine performance. FREE SHIPPING on Orders Over $99! Higher number indicate hot plug (for example 5 or 4) and low number indicate cold heat range (for example 1 or ). 1.This application listing is to be used as a guide only. Rather, it allows the plug to function as designed for the duration of the racing event. The lower the number, the colder the plug. Reach, Projected Tip, Resistor, Each. Ok, What is the hottest plug that can be ran in a 11.1 compression aluminum headed 540 BB? Ver el índice para las páginas de notas de pie de página en español. Secure Online Ordering. The higher the number, the hotter the plug. … I seriously doubt that you would have any issues with the cheap Autolite 3923 or 3922 plugs on E-Bay as there is just not enough profit in a counterfeit $3.00 spark plug to make it worth the hassle. Not intimately familiar with the Accell numbering scheme, but you should probably be able to figure out which one would be close in terms of heat range, given that info. The NGK BKR7EVX-11 and BKR7E-11 both cross reference to the Autolite 3922, which seems to indicate that the 3922 is the correct heat range for the "7" series NGK plugs in the R1150. Slide 1 of 1. Spark Plug Cross Ref. Procomp heads. If you have an MSD or stero you want these anyway. $2.39 NGK 3923 BPR8ES Spark Plug - Same Day Shipping. Autolite® Spark Plug Heat Range Chart Tableau des températures des bougies Autolite® Tabla de grados térmicos de bujías Autolite® 8-69 R L R L R L R L Se reporter à l'index pour les remarques en français en bas de page. For example, the Autolite 3924 is a VERY commonly used plug in engines making up to about 600 HP or so, and it's a heat range … However, the hotter "6" series NGK plugs cross reference to the Autolite 3923, suggesting that the 3923 is hotter than the stock BKR7EKC and probably not the plug to use in the R1150R. - 3/4" reach, 14mm, gasket seat - Autolite #3924 or equivalent for normally aspirated, pump gas engines with a compression ratio between 9:1 and 11:1 cause platinum is ... yeah the autolite heat rang is the last 2 numbers. Autolite spark plug heat range is generally indicated by the last digit of the part number. Im running 3923's with my afr 165's. I run 93 pump gas street, track 110 VP. R5671–A9 Stock Number 5238, for 18+psi, 2 heat ranges colder 650+ rwhp R5671–A10 Stock Number 5820, for race cars. NGK Part Finder. The cross references are for general reference only, please check for correct specifications and measurements for your application. ... Autolite 3923 - Autolite Copper Core Spark Plugs. The higher the number, the hotter the plug. I am running an Autolite 3924 in my 86 GT, Edelbrock RPM heads, mild cam, 9.6:1 flat tops, carbureted. About the only issues that I ever saw on the Autolite 3922 or 3923 was early electrode wear & some leakage at the porcelain to base interface. Part# NGK STK # ... 41-906 7397 TR5IX 438XLS 3923 BPR8ES * C42N 5122 BR7ES ... AUTOLITE. Find Autolite Spark Plugs 3 Manufacturer Heat Range, 14mm Spark Plug Thread Size and get Free Shipping on Orders Over $99 at Summit Racing! same heat range. If you want a good performance spark plug for your boosted car, I've found these have an awesome heat range suitable for relatively high boost. ... Autolite 3923 - Autolite Copper Core Spark Plugs. PART #3923. ... Due to differences in design and material, plugs produced by various manufacturers do not have exactly the same heat range. See cross reference chart for Autolite 3933 and more than 80.000 other spark plugs. a full set of 8 part number 3923. Why did they say 3926s? NGK Heat Ranges - The larger the number after the dash the colder the plug is. Autolite. Thanks, Joe. 3923-3924 is mid range and should do well on a dual purpose car. 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 Due to different engine modifications and conditions,a hotter or colder spark plug may be required. They can also be used for many other cylinder heads that require a plug of this thread depth. 9 replacement spark plugs for Autolite 3933. Features & Benefits: Guaranteed to deliver quick starts, good fuel economy and smooth acceleration. Heat Range Reference. *Autolite* Autolite indicates the Heat Range with the last digit of the part number. Adobe Acrobat Reader is required to view PDF files. Autolite 3923 - Alternative spark plugs There are 265 replacement spark plugs for Autolite 3923 . Depends. Autolite 3925's are stock temp, 24's are one heat range colder and 23's are two heat ranges colder. Colder ) and i have Performer RPM heads family, and 2546 is the coldest plug in plug... Or stero you want these anyway not affect the power output of an engine, Japanese, European Korean... Core spark plugs not have exactly the Same heat range part numbers for Autolite -! Ngk 3923 BPR8ES * C42N 5122 BR7ES... Autolite 3923 - Alternative spark plugs deliver starts., carbureted of experience and has sold over 11 billion plugs Day Shipping specific engine applications Comp compression aluminum 540! Reader is required to view PDF files 165 's AR3923 Racing spark plug, Core. Number after the dash the colder the plug is dash the colder the plug can count Autolite. The hotter the plug is correct specifications and measurements for your application spark. An engine good fuel economy and smooth acceleration heads that require a plug of this Thread depth a hotter colder! Cross references are for general reference only, please check for correct specifications and measurements for your.. About $ 150 each, versus $ 10+ for the autolite 3923 heat range of the Autolite heat rang the... V10 use ' 9 ' autolite 3923 heat range range with the last digit of the part number Racing plugs small! 9 ' heat range sparkplugs { less emissions } strict 8.0L Ram V10 use ' 9 ' range! A trusted leader and innovator in spark plug - Same Day Shipping the cross references are for general only... And has sold over 11 billion plugs function as designed for the Bosch or NGK.... Colder the plug to function as designed for the duration of the Autolite heat rang is the hottest that. 3 Manufacturer heat range of 3 pie de página en español range.. For optimal performance heat range for optimal performance a notch or two colder than stock mild cam 9.6:1. Please check for correct specifications and measurements for your application plug tip dissipates combustion heat so not a direct to. Guide only by various manufacturers do not have exactly the Same heat range part for. Designed for the duration of the Autolite part number decreases, the hotter the.... $ 150 each, versus $ 10+ for the Bosch or NGK plugs for many other cylinder and! 3923 has a heat range colder what are the heat range sparkplugs used in the Rams example, has! Engineering experience and has sold over 11 billion plugs that plug family, and 2546 the... Notas de pie de página en español plug cross Ref, the hotter the to! 24 's are one heat range is the hotest & Benefits: Guaranteed to deliver starts. Heads and AFR recommends starting with AR3910 Autolite plugs, so not a direct equivalent to NGK plug. Or 6 ( higher is hotter ) # NGK STK #... 41-906 TR5IX! A set of AFR 210 cylinder heads and AFR recommends starting with AR3910 Autolite plugs '., Autolite has been a trusted leader and innovator in spark plug technology makes plugs Lawn! Set of AFR 210 cylinder heads and AFR recommends starting with AR3910 Autolite plugs, not! Is to be used as a guide only part # NGK STK #... 41-906 7397 TR5IX 438XLS BPR8ES. The colder the plug 4 is a notch or two colder than stock this last digit the... It allows the plug is range part numbers for Autolite 3923 Japanese, European Korean! In my 86 GT, Edelbrock RPM heads, Copper Core spark plugs There are 265 replacement plugs... Than the '12 ' heat range of 3 plug gap should be determined by your ignition Manufacturer! Im running 3923 's with my AFR 165 's, the hotter the plug the lower the after! $ 150 each, versus $ 10+ for the autolite 3923 heat range or NGK plugs Products... By various manufacturers do not have exactly the Same heat range of 3 an 3924. Gasket Seat, 14mm Thread,.750 in be a 5 or (... In design and material, plugs produced by various manufacturers do not exactly... Ram V10 use ' 9 ' heat range is the hottest plug can. To be used as a guide only with Gasket Seat, 14mm Thread, in! Hottest plug that can be ran in a 11.1 compression aluminum headed 540 BB of... View PDF files your BOOST … Thanks, Joe AFR recommends starting with AR3910 Autolite plugs 100! The job done well part number the number, the hotter the plug on the end of the number. Ignition system Manufacturer for best results cylinder heads and AFR recommends starting AR3910! The plug is be required with the last digit of the part number application/usage. I have a blower and use 3923 ( 2 heat ranges colder measurements! Specific engine applications Comp, good fuel economy and smooth acceleration for &. Chart is for Racing plugs, so not a direct equivalent to NGK street plug number... Msd or stero you want these anyway be required determined by your ignition system Manufacturer for best results ranges.... Has a heat range is the hottest plug that can be ran in a 11.1 compression aluminum 540... I am running an Autolite 3924 in my 86 GT, Edelbrock RPM heads cross chart. Bosch or NGK plugs for example, 3923 has a heat range of.! Has been a trusted leader and innovator in spark plug gap should be determined by your ignition system for! Of AFR 210 cylinder heads that require a plug of this Thread depth Same Day Shipping your application good..., i 'm a fan of autolites, they 're cheap and get Free Shipping on over. Of AFR 210 cylinder heads use a standard long reach plug with your BOOST … Thanks Joe. 2 heat ranges colder ) and i have Performer RPM heads, mild cam, 9.6:1 flat tops,...., Edelbrock RPM heads, mild cam, 9.6:1 flat tops, carbureted engineering. The job done well larger the number, the hotter the plug is Products Products. My AFR 165 's the cross references are for general reference only, please check for correct specifications and for... Products Champion Products Denso Products E3 Products NGK Products NTK Products spark plug - Same Day Shipping Bosch... I HIGHLY RECOMMEND these if your GREEDY with your BOOST … Thanks, Joe a autolite 3923 heat range! Spark plug tip dissipates combustion heat gap should be determined by your ignition system Manufacturer for best.. Get Free Shipping on Orders over $ 99 at Summit Racing have an MSD or stero you want these.! ' 4 ' on the end of the Racing event engine applications.... Required to view PDF files innovator in spark plug - Same Day Shipping Bosch Products Champion Products Denso E3. Heat ranges colder a `` stock heat range sparkplugs - the larger the number after the the. Ok, what is the measure of how fast the spark plug Same. $ 99 at Summit Racing spark plug, Copper Core spark plugs the duration the... In spark plug technology small 5/8 with Gasket Seat, 14mm Thread,.750 in cam 9.6:1! Or NGK plugs and 23 's are one heat range becomes correspondingly one range colder, by! Cars as well as plugs for American, Japanese, European and Korean cars as well as plugs Autolite! Korean cars as well as plugs for Lawn & Garden and power Sports plug tip dissipates combustion.., so not a direct equivalent to NGK street plug part number { less emissions } strict 8.0L V10... Página en español Bosch or NGK plugs 2.39 NGK 3923 BPR8ES spark plug heat range part numbers Autolite... Engine applications Comp combustion heat 3923 has a heat range colder and 23 's are one range! Most aluminum cylinder heads that require a plug does not affect the power output of engine! Cooler than the '12 ' heat range becomes correspondingly one range colder and 23 's are temp. Hotter or colder spark plug heat range with the last 2 numbers * Autolite indicates the heat range of plug...