We speak your language. Free Returns. MEIYA (JS) (Torch) NGK DENSO CHAMPION AC AUTOLITE BOSCH A6TC U5BC A7T U20FS Z10 U4B A7TC C7HSA U22FS-U Z10YC S102F 2795 U4BC A7RTC CR7HS U20FPR RZ10YC U24BC D7 D7EA X22ES-U A8 S123XL X5C D8T X16EP A8Y X4D D8TC D8EA X24ES-U A8YC S121XL 275 X4DC D8RTC DR8EA X24ESR-U RA8YC XR4DC D8RTCS DR8ES E4TC BP4HS L95Y 517 … battery tender factory-activated ag... from: $78.95 - $159.95. Yes, do get a new set of Autolite plugs. Want to get detailed and technical? AutoliteSparkPlugs.com is part of the SparkPlugs.com family, an authorized Autolite dealer. Est. Stay connected with top Autolite sponsored teams and events throughout the country. Order Marine Spark Plugs - Outboard for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. Be the first to know about sales and promotions. Running too cold a plug can only cause it to foul out, whereas running too hot a plug can cause severe engine damage. Difficulty starting engine and misfiring during acceleration may occur. Within that range it is cool enough to avoid pre-ignition and plug tip overheating (which can cause engine damage), while still hot enough to burn off combustion deposits that cause fouling. Noble metals resist corrosion better, preventing fouling plugs. 207 replacement spark plugs for Autolite 275. $7.95. Every car is different, and so is every driver. For example, a 10 heat range in Champion is not the same as a 10 heat range in NGK nor the same in Autolite. ITEM #AUT216. 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 Plug Cross Ref. MOTORSPORTS. An unaltered engine will run within the optimum operating range straight from the manufacturer, but if you make modifications such as adding a turbo or supercharger, increasing compression, timing changes, use of alternate fuels, or sustained use of nitrous oxide, these can alter the plug tip temperature, necessitating a colder plug. *When a spark plug is referred to as a “cold plug”, it is one that transfers heat rapidly from the firing tip into the engine head, keeping the firing tip cooler. Spark Plugs . Secure Online Ordering. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. SKU #103. Free shipping . Inside the cylinder, spark plugs are subjected to severe conditions such as 25,000 volts or more of electricity, temperatures reaching 4,000 degrees Fahrenheit, and pressure up to 2,000 psi. autolite xtreme sport spark plug. NGK Part Finder. Autolite XP104 - Autolite Iridium XP Enhanced Alloy Technology Spark Plugs Spark Plug, Iridium XP Enhanced Alloy, Resistor, 14mm x 1.25, Tapered Seat, 0.679 … 1969. 61 replacement spark plugs for Autolite 664. RESOURCES. Spark plugs that are less likely to foul provide quicker acceleration. Delayed Shipping. For NGK, Denso and Pulstar, the higher the number, the colder the plug. Resistor Stock No. 1 Autolite HT1 Spark Plug (1) + (1) Herko B061 Coil For 2004-08 Ford Lincoln. See cross reference chart for Autolite 664 and more than 80.000 other spark plugs. Any use of this cross reference is done at the installers risk. HEAT RANGE CHART - COPPER PLUS SPARK PLUG / STOCK NUMBER NON-PROJECTED PROJECTED Thread Size Heat Range Non-Resistor Stock No. $29.85. 100% Guaranteed Satisfaction Hassle-Free Returns Awesome Customer Service 888 … Replace with a new set of Autolite spark plugs. E3 Spark Plug Cross Reference for AC Delco, Autolite, Bosch, Champion, Denso, Motorcraft, NGK, and Splitfire spark plugs. Performing too many modifications or tune-ups at once will lead to misleading and inaccurate conclusions if any issues occur (an exception would be when the alternate plugs came as part of a single pre-calibrated upgrade kit). A good rule of thumb is, one heat range colder for every 75–100hp added. The corresponding Champion stock number is 502 which is Champion spark plug D21. $2.90 Autolite 4121 Spark Plug - Same Day Shipping. Spark Plugs Technical Information Thread size 10mm With Gasket 12mm With Gasket 14mm With Gasket 14mm With Tapered Seat 18mm With Gasket 18mm With Tapered Seat Torque ft.-lbs. 502 which is Champion spark plug cross reference chart for Autolite 685 and than... - 5pm PST Autolite 103 Nickel spark plug chart explains how Autolite 's numbering system Wondering what the numbers letters... 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