1975 Checker Marathon Spark Plugs
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Denso®Iridium TT™ Spark PlugChecker Marathon 1975, Iridium TT™ Spark Plug by Denso®. Ultimate Endurance and Power. 0.4 mm Iridium and 0.7 mm Platinum Twin-Tip Technology. Make your vehicle faster and more powerful with premium-quality performance fuel system...$7.32 - NGK®Iridium IX™ Spark PlugChecker Marathon 1975, Iridium IX™ Spark Plug by NGK®. NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium...$8.01
- Denso®Iridium Power™ Spark PlugChecker Marathon 1975, Iridium Power™ Spark Plug by Denso®. Iridium Ultimate Endurance and Power - Performance Upgrade with World's Smallest Center Electrode (0.4 mm Iridium and 0.7 mm Platinum Twin-Tip Technology) & Tapered Tip...$7.19
- Champion®Copper Plus Spark PlugChecker Marathon 4.1L 1975, Copper Plus Spark Plug by Champion®. Built with nickel alloy center and ground electrodes, these spark plugs provide extra durability for long-lasting service life, while the extrusion of copper into the core...Copper Plus - Dependable Performance.Copper core center electrode allows for accurate control of heat range for longer life$1.86
- NGK®G-Power™ Platinum Spark PlugChecker Marathon 1975, G-Power™ Platinum Spark Plug by NGK®. Platinum spark plugs by NGK are designed to improve fuel efficiency, lower emissions, and provide quicker starts while remaining durable under high heat. With 0.6 mm...$3.73
- NGK®V-Power™ Spark PlugChecker Marathon 1975, V-Power™ Spark Plug by NGK®. Spark plugs offer higher performance compared to standard plugs. Spark plugs feature a V-groove center electrode and concave ground electrode that lowers ignition voltage...$1.88
- ACDelco®GM Original Equipment™ Platinum Spark PlugChecker Marathon 4.1L 1975, GM Original Equipment™ Platinum Spark Plug by ACDelco®. If you want to restore the original performance of your vehicle's ignition system, this product is what you need. Engineered to stringent OE...Manufactured to restore your vehicle’s ignition systemDesigned with your specific vehicle in mind$8.02
- Denso®Original U-Groove Nickel Spark PlugChecker Marathon 1975, Original U-Groove Nickel Spark Plug by Denso®. OE Recommended Resistor Plug with Patented U-Groove Design. If you want to restore the original performance of your vehicle's ignition system, this product is what...Manufactured to restore your vehicle’s ignition systemDesigned with your specific vehicle in mind$1.90 - $2.09
- Denso®Platinum TT™ Spark PlugChecker Marathon 1975, Platinum TT™ Spark Plug by Denso®. Unlock the performance of your engine and improve the operation of your ignition system with this quality product. Precision engineered in compliance with rigorous industry...$3.68
- ACDelco®Professional™ Conventional Nickel Spark PlugChecker Marathon 5.7L 1975, Professional™ Conventional Nickel Spark Plug by ACDelco®. Designed for today’s most popular autos, as well as several marine applications, ACDelco’s Rapidfire® Platinum Spark Plugs fit engines using...Ribless insulator that improves the plug-to-boot sealTapered center wire electrode with a platinum pad reduces the firing diameter and helps improve the firing efficiency by concentrating and directing energy needed to fire the plug with less voltage$2.79
- Champion®Platinum Power™ Spark PlugChecker Marathon 5.7L 1975, Platinum Power™ Spark Plug by Champion®. As the leaders in precious metal technologies as well as F.I.S.S resistor technology and MLR™ technology, Champion spark plugs provide enhanced ignition and longer...$2.73
- Autolite®Copper Spark PlugChecker Marathon 5.7L 1975, Copper Spark Plug by Autolite®. With Resistor. OE Style. Want to upgrade the ignition system of your vehicle to get ultimate combustion and maximum horsepower? Step up to Autolite. Featuring the...$1.55
- Brisk®Premium Racing LGS Spark PlugChecker Marathon 5.7L 1975, Premium Racing LGS Spark Plug by Brisk®. With Resistor. Unlock the performance of your engine and improve the operation of your ignition system with this quality product. Precision engineered in compliance...$12.60
- Nitrode®Performance Copper Spark PlugChecker Marathon 1975, Performance Copper Spark Plug by Nitrode®. Hotter Plug, higher heat range. The Nitrode™ spark plugs are positioned to be the world's "greenest" most environmentally friendly spark plugs on the planet. Reducing...$5.77
- Nitrode®Performance Nickel Spark PlugChecker Marathon 5.7L 1975, Performance Nickel Spark Plug by Nitrode®. The Nitrode™ spark plugs are positioned to be the world's "greenest" most environmentally friendly spark plugs on the planet. Reducing fuel consumption and...$10.19
- Nitrode®Yttrium Spark PlugChecker Marathon 1975, Yttrium Spark Plug by Nitrode®. The Nitrode™ spark plugs are positioned to be the world's "greenest" most environmentally friendly spark plugs on the planet. Reducing fuel consumption and emissions while...$5.77 - $10.19
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