Designed to operate over a much wider heat range than ordinary plugs. NGK SPARK PLUG is the world’s leading manufacturer of spark plugs, glow plugs, and lambda sensors, and supplies a vast range of products from the field of ignition and sensor technology. Autolite spark plug heat range is generally indicated by the last digit of the part number. There are 72 replacement spark plugs for NGK UR5. Inside the United States 1-800-230-3030 1-800 … Part Type: Spark Plugs. 100% Guaranteed Satisfaction Hassle-Free Returns Awesome … Summit Racing Gift Cards - Always the Perfect Gift! For example, R6120-85 has a 8.5 heat range and R6120-105 has a … A colder plug would be # R5671A-11 (heat range 11), a hotter plug would be # R5671A-9 (heat range 9). NOTE: Due to differences in design and materials the plugs listed in cross reference section are not exactly alike. The heat range numbering system used by spark plug manufacturers is not universal. 2544 is the coldest plug in that plug family, and 2546 is the hotest. $2.08 + $12.50 Shipping and material, plugs produced by various manufacturers do not have exactly the same heat range. Spark Plugs; Reverse Engineer Parts by Dimension. See cross reference chart for NGK UR5 and more than 80.000 other spark plugs. Summit Racing Gift Cards - Always the Perfect Gift! As such a colder plug may be required. Learn more. Find NGK Spark Plugs Spark Plugs Shorty Spark Plug and get Free Shipping on Orders Over $99 at Summit Racing! 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. For example, take the 254x plug series. Choosing the right heat range is crucial for high performance engines. Mon-Fri 8am-12am ET / Sat-Sun 9am-10pm ET. Don't just ask for a spark plug, insist on NGK. Free shipping for many products! Autolite has 2544, 2545 and 2546 available. 1969. If the heat range is too cold, the spark plug will be unable to properly self-clean by burning off carbon deposits. NGK V-Power Heat Range 5 Spark Plug (UR5) - ngk2771. 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. Shop Now . If the heat range is not optimal, then serious trouble can be the result. Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Make/Engine Search Departments; Brands; Savings Central; Call Us. Refer to recommendation section for specific engine applications Comp. Mon-Fri 8am-12am ET / Sat-Sun 9am-10pm ET. 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. Part# NGK STK # NGK # Comp. For most vehicles, the factory recommended heat range is sufficient; however, on some modified or special-use engines, alternative heat ranges may be necessary. One of the most misunderstood aspects of spark plugs – is the heat range. Therefore, it is impossible to chart an Autolite heat range hierarchy, let alone a standardized comparison to other spark plug brands. Spark plugs may physically appear to be the same but have a different heat range based on the insulator design or shape. Whether the spark plugs are fitted in a lawnmower, boat, or a race car, the spark plug tip temperature must remain between 500C-850°C. 2544 is the coldest plug in that plug family, and 2546 is the hotest. We also share information about your use of our site with our advertising and analytics partners. We are not NGK Spark Plugs USA. Learn more. Shop Now . Advanced Tuners/Engine Builders Section. The spark plug is heated during combustion and must dissipate that heat to the cylinder head at a certain rate to avoid overheating the ceramic firing end. NGK.com specializes in hard to find NGK products. As a result, less heat stays in the ceramic firing end and more is dissipated to the engine. Summit Racing Part Number: NGK-2771. New NTK Technical Sensors. A colder heat range spark plug has an insulator design with a shorter heat flow path to the metal shell of the plug. One misconception is that the heat range is related to the spark temperature or intensity. Spark Plug Heat Range Cross Reference . Some NGK Racing Plugs are also available in half heat ranges. Every plug in the Laser Series was designed for an OEM application. Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Make/Engine Search Departments; Brands; Savings Central; Call Us. Summit Racing Gift Cards - Always the Perfect Gift! NGK Spark plugs are available in a variety of heat ranges to work in any stock or modified engine. 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. Spark plugs heat ranges can vary massively from plug to plug, and (rather frustratingly) can be recorded in a number of different ways, making comparison between brands rather hard. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. Autolite's numbering system does not have a standardized heat range identifier. Spark plug heat range is the measure of how fast the spark plug tip dissipates combustion heat. Spark Plug; Plug Number: TR6; NGK Spark Plugs (U.S.A.), Inc. is the largest OE supplier and manufacturer of spark plugs for domestic and import vehicles in North America. These ideas are both false. This number indicates the thermal characteristics of a spark plug, or how ‘hot’ or ‘cold’ a spark plug is. Understanding Spark Plug Heat Range. Therefore, it is impossible to chart an Autolite heat range hierarchy, let alone a standardized comparison to other spark plug brands. These are displayed as a 2 or 3 digit number after the hyphen. The term hot/cold is commonly used to describe whether a spark plug heats up easily (hot) or … NGK V-POWER SPARK PLUG - 2771 - UR5 - NGK 2771: Available online or at your local NAPA Auto Parts store. As a result, more heat stays in the ceramic firing end and less is dissipated to the engine. Find many great new & used options and get the best deals for NGK Spark Plug 2771 UR5 at the best online prices at eBay! NGK Denso Champion Heat Range Equivalents A Spark Plug's heat range is a measure of it's ability to conduct heat away from its firing end. 2544 is the coldest plug in that plug family, and 2546 is the hotest. 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