AUTOLITE 2103-0414 XS3923 Xtreme Sport Spark Plug Spark Plug - XS3923 Inc Fitment designed exclusively for Harley

Fitment designed exclusively for Harley models allowing for a quick and simple installation

Unique design drops the OEM fairing mount mirrors for that cool Bagger look on models with tall bars

User selectable features allow a variety of run

Installation does not require the removal of the rocker boxes

Black ceramic coated billet tip for years of durability

AUTOLITE 2103-0414 XS3923 Xtreme Sport Spark Plug Spark Plug - XS3923 Inc Fitment designed exclusively for HarleyFeatures More focused ignition to prevent fouling than leading standard plug . 6mm finewire design with Sport V trim ground electrode engineered to offer improved ignitability and durability over a standard plug Up to 26% quicker starts than leading standard plug More horsepower and better fuel efficiency than standard plug Meets or exceeds OEM design Specs Center Electrode Projection Projected Terminal Configuration Threaded Stud Units Each Riding