Autolite Xtreme Sport Iridium XS65 Spark Plug. Fits Big Twin 1975-1999 & S&S Engines with 16mm Spark Plug Thread. FPE-MK00170 Head Dia = 1

Head Dia = 1

Venom and Mod Bandit helmets

This will equate into longer riding times in the saddle

* Replaces OEM # 35042-85

Autolite Xtreme Sport Iridium XS65 Spark Plug. Fits Big Twin 1975-1999 & S&S Engines with 16mm Spark Plug Thread. FPE-MK00170 Head Dia = 1Iridium Powersports Spark Plug Sold Each Autolite Number: XS65 The Xtreme Sport Spark Plug features a platinum finewire tip that helps with easy starting, reduces fouling of the spark plug, and ensures longer performance. They also provide up to 26 percent quicker starts compared to that of standard plugs and as much as 21 percent less hydrocarbon emissions than standard plugs, which promotes better fuel efficiency and horsepower. * Replaces OEM #