Autolite Xtreme Sport Iridium XS4164 Spark Plug. Fits Twin Cam 1999-2017, Sportster 1986-2021, Victory & S&S 124ci.

$23 $20.70

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Iridium Powersports Spark Plug

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Autolite Number: XS4164

The Xtreme SportĀ® 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 # 31600105

* Replaces OEM # 31600106

* Replaces OEM # 32317-86

* Replaces OEM # 32362-04A

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