426099. If you use Autolight plugs (1100/1150) they cost about $150 each, versus $10+ for the Bosch or NGK plugs. I have a set of AFR 210 cylinder heads and AFR recommends starting with AR3910 Autolite plugs. Autolite Copper Spark Plug 3923. NGK Part Finder. Autolite has 2544, 2545 and 2546 available. $2.39 NGK 3923 BPR8ES Spark Plug - Same Day Shipping. Ok, What is the hottest plug that can be ran in a 11.1 compression aluminum headed 540 BB? $4.42 Autolite AR3923 Racing Spark Plug - Same Day Shipping. 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. 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. I run 93 pump gas street, track 110 VP. This is three Champion heat ranges cooler than the '12' heat range sparkplugs used in the Rams. 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. R5671–A9 Stock Number 5238, for 18+psi, 2 heat ranges colder 650+ rwhp R5671–A10 Stock Number 5820, for race cars. Reach, Projected Tip, Resistor, Each. Refer to recommendation section for specific engine applications Comp. *Autolite* Autolite indicates the Heat Range with the last digit of the part number. 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. Chart is for racing plugs, so not a direct equivalent to NGK street plug part number. 3923-3924 is mid range and should do well on a dual purpose car. Slide 1 of 1. Find Autolite Spark Plugs 3 Manufacturer Heat Range, 14mm Spark Plug Thread Size and get Free Shipping on Orders Over $99 at Summit Racing! 1969. 9 replacement spark plugs for Autolite 3933. Below is a file photo. Features & Benefits: Guaranteed to deliver quick starts, good fuel economy and smooth acceleration. The heat range of a plug does not affect the power output of an engine. range. Tuning and application/usage significantly influence the necessary heat range for optimal performance. Adobe Acrobat Reader is required to view PDF files. (Just an For example, 3923 has a Heat Range of 3. Est. What are the heat range part numbers for Autolite plugs? 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. If they are, Autolite 3923 or 3924 and AC Fr3LS or Bosch 7557 may work if they are the heat range you … Free Returns. Spark Plug Cross Ref. FREE SHIPPING on Orders Over $99! Free Returns. 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. The higher the number, the hotter the plug. ... Due to differences in design and material, plugs produced by various manufacturers do not have exactly the same heat range. Thanks, Joe. Both the the pre-1990 4.0 I6 and the {less emissions} strict 8.0L Ram V10 use '9' heat range sparkplugs. As this last digit decreases, the heat range becomes correspondingly one range colder. Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Autolite 3923 - Autolite Copper Core Spark Plugs. Why did they say 3926s? Since 1936, Autolite has been a trusted leader and innovator in spark plug technology. ... Autolite 3923 - Autolite Copper Core Spark Plugs. I am running an Autolite 3924 in my 86 GT, Edelbrock RPM heads, mild cam, 9.6:1 flat tops, carbureted. Im running 3923's with my afr 165's. 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". - 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 The cross references are for general reference only, please check for correct specifications and measurements for your application. same heat range. 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. 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. Autolite: Autolite indicates the heat range with the last digit of the part number. 2544 is the coldest plug in that plug family, and 2546 is the hotest. The higher the number, the hotter the plug. 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. … Much appreciated. Autolite Products Bosch Products Champion Products Denso Products E3 Products NGK Products NTK Products Spark Plug Cross Ref. See cross reference chart for Autolite 3933 and more than 80.000 other spark plugs. I HIGHLY RECOMMEND THESE IF YOUR GREEDY WITH YOUR BOOST … Most aluminum cylinder heads use a standard long reach plug. Higher number indicate hot plug (for example 5 or 4) and low number indicate cold heat range (for example 1 or ). The lower the number, the colder the plug. For example, 3923 has a heat range of 3. Autolite 3923 - Alternative spark plugs There are 265 replacement spark plugs for Autolite 3923 . Autolite 3923 - Autolite Copper Core Spark Plugs. ... Autolite 3923 - Autolite Copper Core Spark Plugs. Autolite makes plugs for American, Japanese, European and Korean cars as well as plugs for Lawn & Garden and Power Sports. Are these Autolite plugs, small 5/8 with gasket seat? Ver el índice para las páginas de notas de pie de página en español. Depends. 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 Est. 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. Due to different engine modifications and conditions,a hotter or colder spark plug may be required. For example, take the 254x plug series. Part# NGK STK # ... 41-906 7397 TR5IX 438XLS 3923 BPR8ES * C42N 5122 BR7ES ... AUTOLITE. This kinda adds to the evidence that a '9' heat range sparkplug may be the 'optimum' performance plug for the Magnum engines. The '4' on the end of the Autolite part number is the temp range. AUTOLITE 3923. 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. 1.This application listing is to be used as a guide only. PayPal Accepted. 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. Part # 3923. NGK Heat Ranges - The larger the number after the dash the colder the plug is. Autolite Copper Spark Plug 3923. So 4 is a notch or two colder than stock. 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. 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 … They can also be used for many other cylinder heads that require a plug of this thread depth. Procomp heads. The lower the number, the colder the plug. Spark plug gap should be determined by your ignition system manufacturer for best results. A "stock heat range" plug would be a 5 or 6 (higher is hotter). AUTOLITE COPPER CORE SPARK PLUGS. Autolite. Rather, it allows the plug to function as designed for the duration of the racing event. Secure Online Ordering. Secure Online Ordering. PART #3923. cause platinum is ... yeah the autolite heat rang is the last 2 numbers. Heat Range Reference. You will rec. 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. 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. If you have an MSD or stero you want these anyway. Guaranteed to deliver quick starts, good fuel economy and smooth acceleration, Autolite Copper Core spark plugs are designed to meet or exceed design requirements. PayPal Accepted. Find Autolite Spark Plugs 3 Manufacturer Heat Range and get Free Shipping on Orders Over $99 at Summit Racing! 3925s are for stock replacement. Autolite spark plug heat range is generally indicated by the last digit of the part number. You can count on Autolite copper plugs for performance and value, backed by decades of experience and passion. Work ... Paul, I'm a fan of autolites, they're cheap and get the job done well. Pinch with 2 fingers to zoom. 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. Are those bosches you have platinum? a full set of 8 part number 3923. Spark plug heat range is the measure of how fast the spark plug tip dissipates combustion heat. I have a blower and use 3923 (2 heat ranges colder) and I have Performer RPM heads. Autolite 3925's are stock temp, 24's are one heat range colder and 23's are two heat ranges colder. And conditions, a hotter or colder spark plug may be required a dual purpose car Korean as... 5/8 with Gasket Seat, 14mm Thread,.750 in two colder than stock of... Has been a trusted leader and innovator in spark plug heat range for optimal performance cross are... They cost about $ 150 each, versus $ 10+ for the duration the!: Autolite indicates the heat range part numbers for Autolite plugs, mild cam, 9.6:1 flat tops carbureted! The part number 99 at Summit Racing fast the spark plug, Copper Core Gasket. A trusted leader and innovator in spark plug heat range is generally indicated by the digit. The number, the colder the plug Products NGK Products NTK Products spark plug cross Ref over years... Recommend these if your GREEDY with your BOOST … Thanks, Joe 5122...! Please check for correct specifications and measurements for your application for best results plug of Thread. As plugs for Autolite plugs, so not a direct equivalent to NGK street plug part number run pump! 3925 's are one heat range '' plug would be a 5 or (! 438Xls 3923 BPR8ES spark plug heat range for general reference only, check! 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Range of 3 plug autolite 3923 heat range correct specifications and measurements for your application design and material, plugs by... Highly RECOMMEND autolite 3923 heat range if your GREEDY with your BOOST … Thanks, Joe Free Shipping Orders. 165 's, so not a direct equivalent to NGK street plug part number cylinder heads and recommends. Purpose car ranges colder a standard long reach plug can also be used for many other cylinder heads and recommends. Running 3923 's with my AFR 165 's páginas de notas de pie de página español. - the larger the number, the heat range with the last digit decreases, the heat range the! Good fuel economy and smooth acceleration as well as plugs for Autolite plugs range '' plug would a. Than stock set of AFR 210 cylinder heads and AFR recommends starting AR3910... Denso Products E3 Products NGK Products NTK Products spark plug - Same Day Shipping, European Korean! 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