Holley EFI GM LS Coil Sub Harnesses 19399904 238 lb/in Spring Rate

238 lb/in Spring Rate

Crankshaft Relucter Wheel

Pit Stop USA offers Five Star Front Bumper Mounting Kit 10001-72721 at low everyday prices

Heat treating with rolled threads for superior form and strength

Holley EFI GM LS Coil Sub Harnesses 19399904 238 lb/in Spring RateFactory replacement coil harness for stock LS coils. Holley is quickly becoming The New Standard In EFI! Holley's HP ECU is standard equipment on the 2013 2014 Chevrolet COPO Camaro and Holley's EFI throttle body powers every NASCAR Cup Series team. Top racers are making the switch to Holley EFI every day. Racers like Tom Bailey who set three new records and took the overall event win on the 2013 Hot Rod Magazine Drag Week and John Scali who used it