Holley EFI GM LS Coil Sub Harnesses Knee Guard Mount A very readable digital display

A very readable digital display makes viewing your exact exhaust temperature effortless

Ideal For Drain Valve

1988-1989 Pontiac Safari

C4-R10 Valve

Holley EFI GM LS Coil Sub Harnesses Knee Guard Mount A very readable digital displayFactory 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