Availability
Wiring Harnesses, Holley EFI, Benchtop Harness, Test Harness, EFI Input Connectors, Power Switch, for HP, Dominator, Terminator, Sniper ECUs, Each
Part Number: HLY-558-127
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Relays, Fuel Pump, 30 Amp, 12V, Single Pole, Blade Type, Wire Harness Included, Each
Part Number: HLY-12-753
Estimated Ship Date: Today
Estimated Ship Date: Today
Wiring Harnesses, Holley EFI, GM Gen V, GDI Late, Sub-Harness, Direct Injection, Pre-Terminated, 4-pin Fuel Sensor, GM, Late LT Based, Engines, Each
Part Number: HLY-558-221
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Fuel Injection System Components, Pressure Transducer, Replacement, 0-3,000 psi, 0.5-4.5 V, 1/8 in.-27 NPT, for Avenger, HP, Dominator EFI, Each
Part Number: HLY-554-137
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Relays, Dual Fuel Pump, 40 Amp, 12V, Single Pole, Blade Type, Wire Harness Included, Chrysler, Dodge, Ford, Kit
Part Number: HLY-12-759
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Wiring Harnesses, Holley EFI, GM Gen V, GDI Early, Sub-Harness, Direct Injection, Pre-Terminated, 4-pin Fuel Sensor, GM, Early LT Based, Engines, Each
Part Number: HLY-558-220
Not Yet Reviewed
Estimated Ship Date: Oct 10, 2025 if ordered today
Estimated Ship Date: Oct 10, 2025 if ordered today
Oxygen Sensor, Bosch LSU4, Wideband, Thread-in, 7-Wire, 14 in. Long 8-pin, Rectangular Plug, Each
Part Number: HLY-554-101
Estimated Ship Date: Today
Estimated Ship Date: Today
Crankshaft Position Sensors, Holley EFI, Replacement, Hall Effect, Magnetic Trigger, M12 x1 in. Thread, 2 in. Long, 3 Wire Connector, Terminals, Each
Part Number: HLY-554-124
Estimated Ship Date: Today
Estimated Ship Date: Today
Ignition Coil Wiring Harnesses, Holley EFI, Coil Harness, Ford Coyote, Plug-and-Play, for HP EFI, Dominator EFI, Ford, F150, Mustang, 5.0L, Each
Part Number: HLY-558-317
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Ignition Coil Wiring Harnesses, Holley EFI, Gen III Hemi, Coil Harness, Late Style, OE Connectors, for HP, Dominator EFI Systems, Dodge, 5.7L, Each
Part Number: HLY-558-311
Estimated Ship Date: Today
Estimated Ship Date: Today
Ignition Coil Wiring Harnesses, Holley EFI, Coyote Ti-VCT, Coil Harness, OE Connectors, Plug-and-Play, for HP EFI, Dominator EFI, Ford, 5.0L, Each
Part Number: HLY-558-322
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Ignition Coil Wiring Harnesses, Holley EFI, Coil Harness, Ford 2V Modular, Plug-and-Play, for HP, Dominator EFI Systems, Ford, Lincoln, Mercury, Each
Part Number: HLY-558-314
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Crankshaft Position Sensors, Holley EFI, Replacement, Hall Effect, Crank Trigger Sensor, with Pigtail Connection, Unterminated, Each
Part Number: HLY-554-117
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Ignition Coil Wiring Harnesses, Holley EFI, Coil Harness, Ford 4V Modular, Plug-and-Play, for HP, Dominator EFI Systems, Ford, Mustang, 4.6L, Each
Part Number: HLY-558-315
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Ignition Coil Wiring Harnesses, Holley EFI, Gen III Hemi, Coil Harness, Early Style, OE Connectors, for HP, Dominator EFI Systems, Dodge, 5.7L, Each
Part Number: HLY-558-310
Not Yet Reviewed
Estimated Ship Date: Oct 13, 2025 if ordered today
Estimated Ship Date: Oct 13, 2025 if ordered today
Weatherproof Connectors, Holley EFI, GM LSx Engine, Main Harness Connectors, Connectors, Pins, Seals, Cavity Plugs included, Kit
Part Number: HLY-570-103
Estimated Ship Date: Today
Estimated Ship Date: Today
Weatherproof Connectors, Holley EFI, GM, MPFI/TPI, Main Harness Connectors, J1A/J1B Connectors, Pins, Seals, Cavity Plugs included, Kit
Part Number: HLY-570-102
Not Yet Reviewed
Estimated Ship Date: Oct 13, 2025 if ordered today
Estimated Ship Date: Oct 13, 2025 if ordered today
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