Spark Plugs

Spark Plugs for Cars, Trucks & Performance Engines

Spark plugs ignite the compressed air-fuel mixture in each cylinder, and the correct plug type, heat range, and gap size are critical for clean combustion, smooth idle, and maximum power. Performance engines with higher compression, boost, or aggressive timing often require colder heat range plugs and tighter gaps for reliable ignition under extreme conditions.

OneFastShop carries spark plugs including copper, platinum, iridium, and double-iridium spark plugs, colder heat range performance plugs, racing spark plugs, and direct-fit replacements for virtually every car, truck, SUV, motorcycle, and performance engine platform.

Every spark plug at OneFastShop ships brand-new with manufacturer warranty coverage. Whether you're performing a routine tune-up, stepping down to a colder heat range for a turbo build, or sourcing race plugs for competition, OneFastShop has the spark plug. Shop the full spark plugs collection today.