Add to Cart Quick view HP ECU & Harness - Ford MPFI NTK HOLLEY MSRP: Now: $2,474.95 Was: Engine Control Module - HP EFI - Wiring Harness - NTK Oxygen Sensor - Ford Multi Port Fuel Injection - Each HLY550-606N
Add to Cart Quick view HP ECU & Harness LS1/LS6 NTK HOLLEY MSRP: Now: $2,564.95 Was: Engine Control Module - HP EFI - Wiring Harness - NTK Oxygen Sensor - 24x Reluctor Wheel - LS1 / LS6 - GM LS-Series - Each HLY550-602N
Add to Cart Quick view Ford MPFI HP ECU and Wire Harness Kit HOLLEY MSRP: Now: $2,249.95 Was: Engine Control Module - HP EFI - Wiring Harness - Ford Multi Port Fuel Injection - Each HLY550-606
Add to Cart Quick view ECU & Harness MPFI Kit HOLLEY MSRP: Now: $2,249.95 Was: Engine Control Module - HP EFI - Wiring Harness - V8 Multi Port Fuel Injection - Each HLY550-604
Add to Cart Quick view HP ECU & Harness GM LS2/LS3/LS7 HOLLEY MSRP: Now: $2,339.95 Was: Engine Control Module - HP EFI - Wiring Harness - LS2 / LS3 / LS7 - GM LS-Series - Each HLY550-607
Add to Cart Quick view Main Harness - Universal MPFI HOLLEY MSRP: Now: $437.95 Was: EFI Wiring Harness - MPFI Main Harness - Holley HP / Dominator EFI - Universal - Each HLY558-104
Add to Cart Quick view Wire Harness MPFI to SS MAP Adapter HOLLEY MSRP: Now: $42.28 Was: Wiring Harness Adapter - MPDI Map Sensor to Delphi GT Sensor - Each HLY558-466
Add to Cart Quick view ECU & Wire Harness Unterminated HOLLEY MSRP: Now: $2,249.95 Was: Engine Control Module - HP EFI - Unterminated Wiring Harness - Universal - Each HLY550-605
Add to Cart Quick view ECU & Wiring Harness LS1 HOLLEY MSRP: Now: $2,339.95 Was: Engine Control Module - HP EFI - Wiring Harness - 24x Reluctor Wheel - LS1 / LS6 - GM LS-Series - Each HLY550-602