Holley EFI Coil Extension Harness - GM LS-Series - (Pair) MS277-20M Two-way switch permits clockwise or

Two-way switch permits clockwise or counterclockwise rotation

and long 17 second pulse for applications such as nitrous oxide

assortment of bump steer spacers

or a blackout cover to hide it completely

Holley EFI Coil Extension Harness - GM LS-Series - (Pair) MS277-20M Two-way switch permits clockwise orDesigned to extend your factory coil harness, allowing you to easily remote mount your LS ignition coils. These 36" long ignition coil extension harnesses are perfect for anyone wanting to remote mount their ignition coils off of the valve covers in order to clean up the look of your engine bay. Product Description: Ignition Wiring Harness Coil Extension Harness GM LS Series Pair Holley is quickly becoming The New Standard In EFI! Holleys HP ECU is