Add to Cart Quick view HP ECU & Harness MPFI - NTK HOLLEY MSRP: Now: $2,736.95 Was: Engine Control Module - HP EFI - Wiring Harness - NTK Oxygen Sensor - V8 Multi Port Fuel Injection - Each HLY550-604N
Add to Cart Quick view Ford MPFI HP ECU and Wire Harness Kit HOLLEY MSRP: Now: $2,460.95 Was: Engine Control Module - HP EFI - Wiring Harness - Ford Multi Port Fuel Injection - Each HLY550-606
Add to Cart Quick view HP ECU & Harness LS1/LS6 NTK HOLLEY MSRP: Now: $2,830.95 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 & Harness MPFI Kit HOLLEY MSRP: Now: $2,521.95 Was: Engine Control Module - HP EFI - Wiring Harness - V8 Multi Port Fuel Injection - Each HLY550-604
Add to Cart Quick view Ford MPFI Coil On Plug Main Harness HOLLEY MSRP: Now: $532.95 Was: Ignition Wiring Harness - Coil-On-Plug Main Harness - Ford MPFI - Each HLY558-118
Add to Cart Quick view Main Harness - Universal MPFI HOLLEY MSRP: Now: $471.95 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: $35.82 Was: Wiring Harness Adapter - MPDI Map Sensor to Delphi GT Sensor - Each HLY558-466
Add to Cart Quick view Terminator X Ford MPFI Kit HOLLEY MSRP: Now: $1,427.95 Was: Engine Control Module - Terminator X - 3.5 in Touchscreen - Wiring Harness - Big Block / Small Block Ford - Kit HLY550-937
Add to Cart Quick view Universal MPFI Coil On Plug Main Harness HOLLEY MSRP: Now: $502.95 Was: Ignition Wiring Harness - Coil-On-Plug Main Harness - Universal - Each HLY558-117