Add to Cart Quick view HP ECU & Harness LS1/LS6 NTK HOLLEY MSRP: Now: $2,849.95 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 ECU & Wiring Harness LS2 HOLLEY MSRP: Now: $2,599.95 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 & Wire Harness Unterminated HOLLEY MSRP: Now: $2,499.95 Was: Engine Control Module - HP EFI - Unterminated Wiring Harness - Universal - Each HLY550-605
Add to Cart Quick view Main Wiring Harness LS1 & LS6 HOLLEY MSRP: Now: $580.95 Was: EFI Wiring Harness - Main Harness - Holley HP / Dominator EFI - 24x Reluctor Wheel - LS1 / LS6 - GM LS-Series - Each HLY558-102
Add to Cart Quick view Ford MPFI HP ECU and Wire Harness Kit HOLLEY MSRP: Now: $2,499.95 Was: Engine Control Module - HP EFI - Wiring Harness - Ford Multi Port Fuel Injection - Each HLY550-606