Autolite Xtreme Sport® Spark Plugs are engineered with the latest automotive technology to power up sport engines. These spark plugs are designed for power sport engines in motorcycles, ATVs, jet skis, boat, and snowmobiles. Autolite® spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.