Autolite Ar73-4Pk High Performance Racing Non-Resistor Spark Plug, 4 Pack Wheel Dust Shields More energy equals a hotter

More energy equals a hotter spark that burns fuel more completely releasing all it's potential energy translating into better fuel economy and more power that you can feel

going for a weekend ride

making it not only visually appealing but also highly functional

Special Notes: Dim Fit Over - Signal Etch

Enriches and restores the original color of your paintwork

Autolite Ar73-4Pk High Performance Racing Non-Resistor Spark Plug, 4 Pack Wheel Dust Shields More energy equals a hotterAutolite Racing Spark Plugs are used by many professional race car drivers. These spark plugs contain an Yttrium Enhanced Alloy, which enables up to 8 percent reduction in side wire temperature for improved durability and less pre ignition. Autolite racing plugs are available in colder heat ranges than most plug manufacturers to support modified engines and feature a cut background electrode for improved ignitibility and faster flame kernel growth.