Autolite AL-4164 Spark Plug for Twin Cam 99-17/Sportster 86-21 & S&S 124ci/Victory (Each) Another single layer denim developed

Another single layer denim developed by Bull-it

• Ziplock closure

silica and carbon black

Standard: 2205

Topping that off with high-loft fur lining for comfort and 100% waterproofing from the hydratex membrane

Autolite AL-4164 Spark Plug for Twin Cam 99-17/Sportster 86-21 & S&S 124ci/Victory (Each) Another single layer denim developedCopper Core Spark Plug Sold Each Traditional nickel electrodes. Copper core improves resistance to fouling. Power tip extends further into the combustion chamber to aid in self cleaning, reducing fouling at low rpms and pre ignition at high speeds. * Replaces OEM # 31600105 * Replaces OEM # 31600106 * Replaces OEM # 32317 86 * Replaces OEM # 32362 04A