Quadratec Part #: 55114.1017
Accel Part #: 0586-4
ACCEL U-Groove performance spark plugs produce a larger spark for more power at high RPMs. Improves throttle response and fuel economy, less fouling. Purified Alumina insulator prevents arcing. Machine rolled threads protect heads.
- Legal in California, or other states adopting California emissions standards, only for racing vehicles that may never be used, registered or licensed for use, upon a highway. Can not be shipped to California residents.