Autolite 4164 Spark Plug. Fits Twin Cam 1999-2017, Sportster 1986-2021, Victory & S&S 124ci. - Autolite Spark Plugs Exhaust & Mufflers Will Not work with 1999

Will Not work with 1999 & earlier Stock HD Brake calliper's

* Next generation hidden breather backing plate shooter tubes and oil reservoir also included

Perfect for home use or on the road

Detailed contrasting embroidery on the chest adds a feminine touch to this go-to zip up layer

Fits all male mount-style footpegs (except '08-'13 XR models)

Autolite 4164 Spark Plug. Fits Twin Cam 1999-2017, Sportster 1986-2021, Victory & S&S 124ci. - Autolite Spark Plugs Exhaust & Mufflers Will Not work with 1999Copper 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