Autolite AL-4164 Spark Plug for Twin Cam 99-17/Sportster 86-21 & S&S 124ci/Victory (Each)
Autolite AL-4164 Spark Plug for Twin Cam 99-17/Sportster 86-21 & S&S 124ci/Victory (Each) is backordered and will ship as soon as it is back in stock.
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Copper 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
(Part Numbers: ROL-AL-4164)