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.
Great plugs! When I pulled the old ones at over 50,000-miles, they still looked like new and these are standard, i.e., non-platinum spark plugs! They showed no wear and were clean! So I just stuck them back in until I got the new, correct ones, after I'd been sold the wrong plugs (improper thread-length) from a parts outlet, online.
Cleveland, Ohio-based ACCEL Ignition has been a leader in off-road ignition systems for four decades. In the 2000s, ACCEL was purchased by leading fuel systems manufacturer Holley, which has been in the business for over a century. ACCEL's innovation in SuperCoils, tune-up kits, fuel injectors and spark plug wires comes from its long relationship with motorsports and racing industry professionals. Every product with the ACCEL name on it was tested by a professional driver in real world conditions all throughout the design process. As off-road engines and off-road driving techniques continue to develop and innovate, so will ACCEL products. Shop ACCEL Now