Holley 550-604 Holley HP EFI ECU and Harness Kits

Free Shipping - Holley HP EFI ECU and Harness Kits with qualifying orders of $109. Shop Engine Management Systems at Summit Racing.
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, Wideband, CANBUS, Universal, MPFI, Kit

HOLLEY MPFI MAIN HARNESS - HP & DOMINATOR EFI - UNTERMINATED

Products – KSR Race Parts

ECU AND HARNESS KITS - HP EFI - EFI - FUEL INJECTION - Holley

550-604 Universal V8 Multi-Point Fuel Injection, Includes Bosch Oxygen Sensor for blown Engines see 550-604N, Looking for a plug and play alternative

550-604 Holley HP EFI ECU and Harness Kit- Universal V8 Unblown

Looking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as an alternative to the factory ECU and harness or as a replacement for your C950 ECU.