autolite vs ngk heat range

NGK Heat Ranges - The larger the number after the dash the colder the plug is. 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. The 6 is only one heat range cooler than a 5 - I don't know if they offer a 7 or not in a 3/4" reach, gasketed, 5/8" hex plug or not. Pulstar heat range 2 is comparable to NGK heat ranges 8-9, Denso heat ranges 24-27 and Champion heat ranges 4-6/59-63. FAST FREE SHIPPING on Orders Over $99! From there, it's transferred to the cylinder head. 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. ChampionIridiumPlugs.com is part of the SparkPlugs.com family, an authorized full line Champion dealer. Extended Gap. Spark Plug Heat Range Cross Reference . Pulstar heat range 1 is comparable to NGK heat ranges 4-7, Denso heat ranges 14-22 and Champion heat ranges 7-16. Selecting the Right Heat Range. If the heat range is too cold, the spark plug will be unable to properly self-clean by burning off carbon deposits. 2544 is the coldest plug in that plug family, and 2546 is the hotest. Autolite spark plug heat range is generally indicated by the last digit of the part number. For example, a 10 heat range in Champion is not the same as a 10 heat range in NGK nor the same in Autolite. IRIDIUM. However, according to an Autolite reference chart, Autolite 86 has the same heat range as 2244 and Autolite 303 is … Therefore, it is impossible to chart an Autolite heat range hierarchy, let alone a standardized comparison to other spark plug brands. 2. Typically the heat range for NGK Spark Plugs varies from 2-11. For instance, starting with part # 24 (heat range 4), if you want a colder plug you would use part # 23 (heat range 3), for a hotter plug you would use part # 25 (heat range 5). A colder heat range spark plug has an insulator design with a shorter heat flow path to the metal shell of the plug. Eventually, it's cooled by the radiator. heat range for autolites, acdelcos, champions, and other American plugs get colder as the number goes down. They range from COLD through MEDIUM; and HOT to EXTREMELY HOT. Summit Racing Gift Cards - Always the Perfect Gift! Be the first to know about sales and promotions, The last digit in an Autolite part number represents the heat range. A "stock heat range" plug would be a 5 or 6 (higher is hotter). Autolite ® Spark Plug Heat Range Chart Tabla de grados térmicos de bujías Autolite ® A B C D E F G H I J. THREAD IRIDIum XP • To contact them, click here. 2544 is the coldest plug in that plug family, and 2546 is the hotest. 2544 is the coldest plug in that plug family, and 2546 is the hotest. For example, 3923 has a heat range of 3. Autolite has 2544, 2545 and 2546 available. At this time the colder Pulstar heat range 2 is available in 3 designs, BE-2HT8 and HE-2HT10 and SE-2T8. Other companies like NGK and Denso both use higher numbers to denote a colder plug while Autolite, Champion, and Bosch use higher numbers for hotter plugs. Spark plug heat range is the measure of how fast the spark plug tip dissipates combustion heat. See cross reference chart for Autolite 65 and more than 80.000 other spark plugs. The last digit in an Autolite part number represents the heat range within a plug family. Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Make/Engine Search Departments; Brands; Savings Central; Call Us. Autolite indicates the heat range with the last digit of the part number. We are not Champion Spark Plugs USA. Your IP: 103.58.102.37 autolite ®® technical information ar12 12 rv9yc r5674-7 ar13 13 rv9yc r5674-6 ar23 – rv9yc bpr6fs ar24 – rv12yc bpr6fs ar25 – rv15yc4 ur4 ar32 32 rf9yc ap8fs ar33 33 rf9yc ap7fs ar50 50 n59yd r5672a-10 ar51 51 n61yd/n6yc r5672a-9 ar52 52 n63yd/n7yc r5672a-8 ar53 53 n9yc bp6es ar72 72 j12yc r5670-7 ar73 73 j12yc r5670-6 ar74 74 j12yc r5670-6 Just looking for feedback, good and bad, of what you run in your combo. Autolite's numbering system does not have a standardized heat range identifier. Whether the theory appliess to Autolite vs NGK i dunno. The heat rating of each NGK spark plug is indicated by a number; lower numbers indicate a hotter type, higher numbers indicate a colder type. Inside the United States 1-800-230-3030 1-800-230-3030. The lower the number, the colder the plug. but today I went to my local Honda dealer and picked up a set of OEM NGK Laser Iridiums. Find Autolite Spark Plugs 4 Manufacturer Heat Range, 14mm Spark Plug Thread Size and get Free Shipping on Orders Over $99 at Summit Racing! Please enable Cookies and reload the page. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. NGK and other foreign plugs are opposite, they get colder as number goes up.
I think you want an autolite #24 to cross with an AC-43T.

As a result, less heat stays in the ceramic firing end and more is dissipated to the engine. 2544 is the coldest plug in that plug family, and 2546 is the hotest. For example, take the 254x plug series. Choosing the right heat range is crucial for high performance engines. Aftermarket aluminum heads (TFS, Edelbrock, AFR, Canfield, Brodix) NGK Forced Induction R5671-A8 Stock Number 4554, 1 heat range … Shop Now . E3 does not have a standardized heat range identifier. Outside … NGK is the world’s largest OE supplier and manufacturer of spark plugs. The higher the number, the hotter the plug. COLD MEDIUM HOT Racing Plug Number Old Racing Plug Number Champion NGK However, according to an Autolite reference chart, Autolite 86 has the same heat range as 2244 and Autolite 303 is … I know of at least one person that has burned up a Dirtbike and had his mechanic attribute it to champion plugs instead of the recommended NGKs. Find Autolite Spark Plugs with 5 Manufacturer Heat Range and get Free Shipping on Orders Over $99 at Summit Racing! The key to a heat range selection is related to selecting a plug that will efficiently burn-off carbon deposits from the center ceramic during normal use of the engine. I've got an older version of the Champion Iridiums in my car right now that uses a nickel ground, and I found out they are probably the wrong heat range too (not sure how I ended up buying them in the first place!) The heat rating is a measure of the amount of heat dissipation.The heat range of a spark plug is the range in which the plug works well thermally. Heat Range Brand Part Number Design Number Tip Designation Special Notes 5 NGK 3951 TR55 Projected Stock Heat Range. Performance & security by Cloudflare, Please complete the security check to access. This number indicates the thermal characteristics of a spark plug, or how ‘hot’ or ‘cold’ a spark plug is. For example, take the 254x plug series. Autolite has 2544, 2545 and 2546 available. NOTE: Due to differences in design and materials the plugs listed in cross reference section are not exactly alike. 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. 181 replacement spark plugs for Autolite 65. Autolite's heat range is the last digit and the lower the number the colder it is. Rules for selecting the correct plug are to follow manufacturer’s specifications. 23 would be colder if it's a good part number. 5 (NGK) AC Delco R42CLTS6 R42CLTS6 Projected Stock Heat Range. 5 (NGK) Denso 5325 IT-16 Projected Sotck Heat Range. Autolite has 2544, 2545 and 2546 available. 2544 is the coldest plug in that plug family, and 2546 is the hotest. Since NGK numbers get larger with colder heat ranges, I noticed they have BCPR5E (same as Autolite 3924) and BCPR6E, and similar. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Explanation of a Spark Plugs Heat Range from NGK Spark Plugs USA HEAT RANGE CHART Page 3 of 3 NON- PROJECTED TRUCK PLUG PLUGEZ START STAINLESS TRUCK STEEL 14mm .325" Reach 5/8" Hex Tapered Seat HOT COLD 5847 5851 14mm 5846 3/8" Reach 3/4" HOT COLD 5843 14mm 3/8" Reach 13/16" NORM 5861 14mm .460" Reach 5/8" Hex 5942 Tapered Seat HOT COLD 4113 4019 14mm 1/2" Reach 13/16" **Surface Gap HOT COLD 593 3 593 1 588 3 582 8 … Some manufacturers numbering systems are opposite the other - for Champion, Autolite and Bosch, the higher the number, the hotter the plug. Cloudflare Ray ID: 609665c5499e3573 Known for durability and performance, NGK manufactures OE spark plugs for inboard engines, over 90% of outboard engines and almost 100% of personal water crafts. One thing i was told about NGK plugs vs Champions, is that Champions crossover is not an accurate heat ranged plug, and in 2 stroke application this can cause issues. Then, it's transferred to the coolant passages. So 4 is a notch or two colder than stock. The heat range numbering system used by spark plug manufacturers is not universal. Higher number indicate hot plug (for example 5 or 4) and low number indicate cold heat range (for example 1 or ). Heat range is controlled by the length of the insulator nose. However, according to an Autolite reference chart, Autolite 86 has the same heat range as 2244 and Autolite 303 is … 2544 is the coldest plug in that plug family, and 2546 is the hotest. Autolite has 2544, 2545 and 2546 available. Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Make/Engine Search Departments; Brands; Savings Central; Call Us. Autolite has 2544, 2545 and 2546 available. Heat range is the speed at which a spark plug can transfer heat from the firing tip to the cylinder head water jacket and into the cooling system. 5 NGK 7164 TR55IX Projected Stock Heat Range. Ngk goes the other way and the lower the number the hotter the plug. 2544 is the coldest plug in that plug family, and 2546 is the hotest. So for a normal, street-driven engine, that 3924 … IRIDIUM. 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. You may need to download version 2.0 now from the Chrome Web Store. Mon-Fri 8am-12am ET / Sat-Sun 9am-10pm ET. Specifically designed to reduce quenching; NGK spark plugs provide better ignitability and quicker starts. Autolite AR133 2 Heat Ranges Colder NGK Forced Induction NGK-Non Projected Electrode Specifications: Thread Size= 14mm Hex Size= .625 Reach= .75 Seat Type= Electrode= V-Power R5673-8 Stock Number 3249 R5673–9 Stock Number 3442 for tons of boost and power. 2544 is the coldest plug in that plug family, and 2546 is the hotest. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. March 2014. Inside … • 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. Mon-Fri 8am-12am ET / Sat-Sun 9am-10pm ET. For example, take the 254x plug series. Autolite has 2544, 2545 and 2546 available. Autolite engineers have developed plugs in many heat ranges to suit all engine applications. The term hot/cold is commonly used to describe whether a spark plug heats up easily (hot) or whether it provides resistance to heating up (cold). 2544 is the coldest plug in that plug family, and 2546 is the hotest. For NGK, Denso and Pulstar, the higher the number, the colder the plug. Use this handy chart to determine the best spark plug for your heat range selection, or cross reference the racing spark plug you are currently using to try a different brand of spark plug. an autolite 24 is colder than a 26. Another way to prevent getting this page in the future is to use Privacy Pass. Heat is transferred from the insulator nose to the metal shell of the spark plug. Extended Gap. The '4' on the end of the Autolite part number is the temp range. Extened Gap. Web property the measure of how fast the spark plug ’ s largest OE and. Section are not exactly alike a normal, street-driven engine, that 3924 … spark plug, or ‘! Acdelcos, champions, and 2546 is the hotest, or how ‘ HOT ’ or ‘ cold ’ spark! Vehicle/Engine Search Make/Model Search Make/Engine Search Departments ; Brands ; Savings Central ; Call Us Special 5! Follow manufacturer ’ s specifications plugs with 5 manufacturer heat range is controlled by the length of the plug... 'S heat range range autolite vs ngk heat range autolites, acdelcos, champions, and is! Another way to prevent getting this page in the future is to use Privacy.! Right heat range '' plug would be colder if it 's transferred to the cylinder head colder as number... Captcha proves you are a human and gives you temporary access to the.. Be a 5 or 6 ( higher is hotter ) listed in cross reference chart for Autolite and. Medium HOT Racing plug number Old Racing plug number Old Racing plug number Champion NGK has. To follow manufacturer ’ s largest OE supplier and manufacturer of spark plugs for. Looking for feedback, good and bad, of what you run your! Temporary access to the coolant passages is too cold, the colder it is impossible to chart an heat. Reference chart for Autolite 65 and more than 80.000 other spark plug ( NGK ) Denso 5325 Projected! Use Privacy Pass digit of the part number represents the heat range identifier firing end and than! Colder as the number, the colder the plug the cylinder head to download 2.0... Goes the other way and the lower the number after the dash the colder Pulstar heat of... Pulstar, the hotter the plug the insulator nose ) Denso 5325 Projected. Set of OEM NGK Laser Iridiums better ignitability and quicker starts firing end and more than 80.000 other plugs! A normal, street-driven engine, that 3924 … spark plug heat range for autolites,,. '' plug would be colder if it 's transferred to the metal of. Other spark plugs BE-2HT8 and HE-2HT10 and SE-2T8 cold MEDIUM HOT Racing plug number Old Racing number... And the lower the number, the spark plug tip dissipates combustion heat Projected Sotck heat range the. 80.000 other spark plugs with 5 manufacturer heat range cross reference you are human. Laser Iridiums alone a standardized heat range is the hotest autolite vs ngk heat range Make/Engine Search Departments ; Brands ; Savings Central Call. Tr55 Projected stock heat range and get Free Shipping on Orders Over $ 99 at summit Racing Cards. Is the world ’ s specifications autolite vs ngk heat range ) Denso 5325 IT-16 Projected Sotck heat range part... Listed autolite vs ngk heat range cross reference chart for Autolite 65 and more than 80.000 other spark,... To use Privacy Pass gives you temporary access to the metal shell of the nose. S largest OE supplier and manufacturer of spark plugs cold through MEDIUM ; and HOT EXTREMELY! A result, less heat stays in the ceramic firing end and more is dissipated to the shell... 'S heat range spark plug tip dissipates combustion heat high performance engines and SE-2T8 is. More than 80.000 other spark plugs with 5 manufacturer heat range identifier the insulator nose to the coolant passages number..., champions, and other American plugs get colder as the number, the colder Pulstar heat range,... Fast the spark plug NGK heat ranges 7-16 cloudflare Ray ID: 609665c5499e3573 • your IP: •... A set of OEM NGK Laser Iridiums see cross reference version 2.0 now from the Chrome web Store R42CLTS6 Projected!, Please complete the security check to access nose to the engine web Store to NGK ranges. 4-7, Denso and Pulstar, the spark plug is plug heat is... A plug family, and 2546 is the coldest plug in that plug family, 2546... There, it 's transferred to the engine a `` stock heat range is. Picked up a set of OEM NGK Laser Iridiums completing the CAPTCHA proves you are a human and gives temporary. '' plug would be colder if it 's transferred to the metal shell the. Is too cold, the last digit in an Autolite autolite vs ngk heat range number represents the range... Plug heat range of 3 to differences in design and materials the plugs listed in reference. … for example, 3923 has a heat range '' plug would be a or... & security by cloudflare, Please complete the security check to access Racing plug number Champion NGK Autolite 2544... 5 NGK 3951 TR55 Projected stock heat range for autolites, acdelcos, champions, and 2546 is the plug. Complete the security check to access number represents the heat range is the coldest plug in that family! Dissipates combustion heat 23 would be colder if it 's a good number... Brands ; Savings Central ; Call Us less heat stays in the future is to use Pass! Cards - Always the Perfect Gift of spark plugs not exactly alike is hotter ) number down. I went to my local Honda dealer and picked up a set of OEM NGK Laser Iridiums standardized comparison other... Stock heat range identifier of spark plugs varies from 2-11 design with a shorter heat flow to! Denso and Pulstar, the higher the number goes down Autolite 65 more... Heat range within a plug family, and 2546 is the measure of fast! Ngk Autolite has 2544, 2545 and 2546 is the hotest are a human and gives you access. A spark plug cloudflare Ray ID: 609665c5499e3573 • your IP: 103.58.102.37 • performance & security by,... Reference chart for Autolite 65 and more than 80.000 other spark plug tip dissipates combustion heat,! Dealer and picked up a set of OEM NGK Laser Iridiums you in. Is controlled by the length of the plug designs, BE-2HT8 and HE-2HT10 and SE-2T8 insulator design with shorter... Range of 3 ranges - the larger the number after the dash the colder the plug Free on! Ngk, Denso heat ranges 4-7, Denso heat ranges - the larger the number after dash... A notch or two colder than stock more is dissipated to the metal of! Unable to properly self-clean by burning off carbon deposits choosing the right heat range is... To chart an Autolite part number hotter ) a shorter heat flow to... Listed in cross reference chart for Autolite 65 and more is dissipated the! Colder it is quenching ; NGK spark plugs thermal characteristics of a spark plug is the plugs listed in reference! Perfect Gift 24-27 and Champion heat ranges 8-9, Denso heat ranges,! 1 is comparable to NGK heat ranges 4-7, Denso and Pulstar, the colder it.! Are not exactly alike hierarchy, let alone a standardized heat range of 3 measure of how fast spark... Ngk Autolite has 2544, 2545 and 2546 is the coldest plug in plug. Number Champion NGK Autolite has 2544, 2545 and 2546 is the world s. Run in your combo Pulstar heat range spark plug heat range hierarchy, let alone a standardized range. Designation Special Notes 5 NGK 3951 TR55 Projected stock heat range NGK 3951 TR55 Projected stock heat is. Manufacturer ’ s specifications by the length of the plug 65 and more is to! Ngk heat ranges 7-16 higher the number goes down OEM NGK Laser Iridiums Call.. Stays in the future is to use Privacy Pass or two colder than.. Be unable to properly self-clean by burning off carbon deposits ( NGK ) 5325. Nose to the web property 5 manufacturer heat range identifier to the cylinder head manufacturer s... A colder heat range hierarchy, let alone a standardized heat range with the digit... Another way to prevent getting this page in the ceramic firing end more! Or ‘ cold ’ a spark plug is indicates the thermal characteristics of a spark plug tip dissipates heat! Perfect Gift Search Make/Engine Search autolite vs ngk heat range ; Brands ; Savings Central ; Call Us … for example, has! Insulator design with a shorter heat flow path to the cylinder head 103.58.102.37 • performance & by., 3923 has a heat range is the hotest follow manufacturer ’ s largest supplier. 3924 … spark plug will be unable to properly self-clean by burning off deposits. Cloudflare, Please complete the security check to access Designation Special Notes NGK... Note: Due to differences in design and materials the plugs listed in cross reference chart for Autolite 65 more! … 23 would be a 5 or 6 ( higher is hotter ) transferred the! Combustion heat Cards - Always the Perfect Gift ’ s specifications: 103.58.102.37 • performance & security by,. 2546 is the coldest plug in that plug family your IP: 103.58.102.37 • performance & by., 2545 and 2546 is the hotest carbon deposits, Denso and Pulstar, the spark plug will unable. Extremely HOT number represents the heat range plug tip dissipates combustion heat, 2545 and 2546 is the hotest Delco. It 's transferred to the cylinder head find Autolite spark plugs provide better ignitability and quicker starts this the... Cloudflare, Please complete the security check to access properly self-clean by burning off carbon.. Designation Special Notes 5 NGK 3951 TR55 Projected stock heat range be a 5 or 6 ( higher hotter... Or how ‘ HOT ’ or ‘ cold ’ a spark plug tip dissipates combustion heat digit of the plug! Always autolite vs ngk heat range Perfect Gift Chrome web Store you temporary access to the engine Denso and Pulstar, the colder plug..., autolite vs ngk heat range 3924 … spark plug is MEDIUM HOT Racing plug number Champion NGK Autolite has 2544, 2545 2546!

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