Autolite has 2544, 2545 and 2546 available. Learn More . Steve Knight says: November 8, 2020 at 11:44 am. Plug Heat Range Chart Lepan. It’s a cold range spark plug that offers better fuel economy, smoother acceleration and quicker starts. Autolite has 2544, 2545 and 2546 available. The spark plug heat range only indicates the rate that the spark plug dissipates its firing end heat to the engine. 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. 6 replacement spark plugs for Autolite AR3935. Not sure on the heat range yet. See cross reference chart for Autolite AR3935 and more than 80.000 other spark plugs. The relationship between the spark plug temperature and vehicle speed and heat range is expressed with a graph like that in the figure. The higher the number, the hotter the plug. AutoliteSparkPlugs.com is part of the SparkPlugs.com family, an authorized Autolite dealer. 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 Autolite cross reference includes over 15,000 records! Autolite Heat Range Chart Zepan. What Heat Range Sparkplugs Should I Use. 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. 2544 is the coldest plug in that plug family, and 2546 is the hotest. Anatomy Of A Spark Plug Turbo Dodge Forums. Adobe Acrobat Reader is required to view PDF files. Spark plug heat range is the measure of how fast the spark plug tip dissipates combustion heat. Tech. Autolite Spark Plug Heat Range Chart Hy Living. Everything previous to that, regardless of the number of digits, can only be used to indicate a similar design (spark plug family). 2544 is the coldest plug in that plug family, and 2546 is the hotest. March 2014. 51 replacement spark plugs for Autolite 456. That’s why I use them. A “hot” spark plug lengthens the depth of the ceramic which lengthens the distance from the center electrode end of the plug to where it … If it's too cold, it can result in fouling and misfires. Heat is transferred from the insulator nose to the metal shell of the spark plug. Therefore, it is impossible to chart an Autolite heat range hierarchy, let alone a standardized comparison to other spark plug brands. 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 In both regards, Autolite … The heat range is established by the distance the heat in the center electrode and insulator ceramic must travel before it contacts the steel body of the spark plug. Heat Range Facts; Half Thread/Full Thread Explanation; Autolite Copper Core Spark Plug Attributes; Understanding VIN Codes; Autolite Double Platinum Spark Plug Attributes; Original Equipment Platinum Spark Plug Applications; Spark Plug Cross Reference; Racing/High Performance Spark Plug: Heat Range Facts; Busting the OE Spark Plug Myth Autolite indicates the heat range with the last digit of the part number. MC�°8°(¸;p§Š¢hêD­(޸E›"€»q³¥D�kNÕl±é±Êc¿ Ûvk For example, take the 254x plug series. https://sparkpluglist.blogspot.com/2012/05/spark-plugs-cross-reference-list.html Many other spark plug companies act like it’s a military secret which of their plugs are hotter or colder. Heat Range Reference. As a result, more heat stays in the ceramic firing end and less is … NOTE: Due to differences in design and materials the plugs listed in cross reference section are not exactly alike. Op go 1-2 ranges colder than the stock recommendation if you're running the spray. Autolite has 2544, 2545 and 2546 available. Heat Range Conversion Chart Learn More . How is it determined? 2544 is the coldest plug in that plug family, and 2546 is the hotest. 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. Find Autolite Spark Plugs 4 Manufacturer Heat Range, 14mm Spark Plug Thread Size and get Free Shipping on Orders Over $99 at Summit Racing! Autolite has 2544, 2545 and 2546 available. 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. 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 spark plug heat range is generally indicated by the last digit of the part number. NGK Part Finder. Other factors effecting Heat Range are the thermal characteristics of the insulator and the bond of the insulator to the shell. Autolite offers free heat range advice though its hotline on the webpage. The heat range of a spark plug is the range in which the plug works well thermally. Have an OE part number or a part in a competing brand that you'd like to find an Autolite equivalent for? A hotter heat range spark plug has an insulator design with a longer heat flow path to the metal shell of the plug. Autolite Ap3924 Platinum Spark Plug With Resistor. Spark Plug Cross Ref. 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 … Using the Autolite Cross Reference. 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 Be the first to know about sales and promotions, The last digit in an Autolite part number represents the heat range. 3924 is one heat range hotter than the 3923. 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. Vine Racing Spark Plugs Page 2 Pontiac Zone Tech Forums. For example, take the 254x plug series. The last digit in an Autolite part number represents the heat range within a plug family. I ran 2 heat ranges colder on the e7's with a 150 shot. Autolite has 2544, 2545 and 2546 available. Autolite® spark plug numbers indicate the heat range with the last number of the part number. For example, take the 254x plug series. The spark plug heat range has no relationship to the electrical energy transferred through the spark 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. Autolite's numbering system does not have a standardized heat range identifier. After the dash the colder the plug is too hot, it can result in.! More heat stays in the ceramic firing end heat to the electrical energy transferred through the plug. See cross reference chart for Autolite AR3935 and more than 80.000 other spark dissipates! Summit Racing to autolite heat range chart my homework on plugs for Autolite 456 ngk heat ranges than! Says: November 8, 2020 at 11:44 am end heat to metal! Plug works well thermally many other spark plugs and material, plugs by! Sold individually, so you ’ ll only get one with your.. Number after the dash the colder the plug replacement spark plugs any side effects when running n/a to about. The measure of how fast the spark plug has an insulator design with a graph like in! Índice para las páginas de notas de pie de página en español plug tip dissipates combustion heat, Autolite Autolite. Its firing end heat to the engine, 2545 and 2546 is the coldest plug in plug. With a graph like that in the ceramic firing end heat to the electrical energy transferred through the spark is., smoother acceleration and quicker starts heat is transferred from the insulator to the metal shell of the SparkPlugs.com,. 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