Holley EFI GM LS 58x Harness Kit 558-501 USCAR/EV6 Injector LS2 LS3 LS7
Holley EFI GM LS2/LS3/LS7, 58X Crank Sensor, USCAR/ EV6 Injector. An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit comes complete with the main harness, power harness and injector harness to support your primary system! Harness
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