Add to Cart Quick view ECU & Wiring Harness LS2 HOLLEY MSRP: Now: $2,339.95 Was: Engine Control Module - HP EFI - Wiring Harness - 58x Reluctor Wheel - LS2 / LS3 / LS7 - GM LS-Series - Each HLY550-603
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
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 EFI Injector Harness - Universal Unterminated HOLLEY MSRP: Now: $207.95 Was: Fuel Injector Harness - Unterminated - Bosch Terminal Ends Included - Holley HP / Dominator EFI - Kit HLY558-204
Add to Cart Quick view Injector Harness - 16 Injectors - Unterminated HOLLEY MSRP: Now: $279.95 Was: EFI Wiring Harness - EV6 Style Injectors - Holley HP / Dominator EFI - Each HLY558-207
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 MPFI - NTK HOLLEY MSRP: Now: $2,474.95 Was: Engine Control Module - HP EFI - Wiring Harness - NTK Oxygen Sensor - V8 Multi Port Fuel Injection - Each HLY550-604N
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