Availability
Wire Connectors, Weatherproof Pigtail, Female Connector, Dual 8mm Pin, Air Conditioning, R-4 Style, Radial Compressor, Each
Part Number: HLY-199-200
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Weatherproof Connectors, Holley EFI, GM Manifold Air-temp Connector, Main Harness, GT150, 2-pin Female, Black Plastic, with Pins, Seals, TPA, Each
Part Number: HLY-570-216
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Connector Kits, Replacement, Connectors, Male, Pins, Grommets, Stealth Ram, Power Pack, for MAP, IAC, TPS, Coolant, Air Intake, Sensors, Kit
Part Number: HLY-534-213
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Weatherproof Connectors, Holley EFI, Hemi, Air Temperature Sensor Connector, Main Harness, Molex 2-pin, Female, Black Plastic, Pins, Seals, TPA, Each
Part Number: HLY-570-227
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Weatherproof Connectors, Holley EFI, Ford Modular/Coyote, Idle Air Control Connector, SSC, 2-pin, Female, Black Plastic, with Pins, Seals, TPA, Each
Part Number: HLY-570-238
Not Yet Reviewed
Estimated Ship Date: Mar 10, 2026 if ordered today
Estimated Ship Date: Mar 10, 2026 if ordered today
Weatherproof Connectors, Holley EFI, Ford Modular/Coyote, Manifold Air Temp Connector, SSC, 2-pin, Female, Gray Plastic, with Pins, Seals, TPA, Each
Part Number: HLY-570-237
Not Yet Reviewed
Estimated Ship Date: Mar 10, 2026 if ordered today
Estimated Ship Date: Mar 10, 2026 if ordered today
Engine Management Systems, Holley EFI, Terminator X Max, Up to 8-Injectors, 8-Coils, Analog Input/Outputs, Trans Controller, Chevy, Ford, Dodge, Each
Part Number: HLY-554-153
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Oxygen Sensors, Holley EFI, NTK, Wideband, 18mm x 1.5 Thread, 7 Wire Connection, 0-1 V, Wire Harness, 8-pin, Rectangular Plug, Each
Part Number: HLY-554-100
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Engine Management Systems, Holley EFI, Terminator X, Controls 8-Injectors, 8-Coils, Analog Input/Outputs, Wideband, CANBUS, Chevy, Ford, Dodge, Each
Part Number: HLY-554-152
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
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: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Engine Management Systems, HP EFI, ECU, Replacement, Plug-and-Play, 16-Injectors, Eight Coils, Analog Inputs, USB Cable, Software, Each
Part Number: HLY-554-113
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, Wideband, CANBUS, Universal, MPFI, Kit
Part Number: HLY-550-604
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NTK O2, Wideband, CANBUS, Universal, MPFI, Kit
Part Number: HLY-550-604N
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, for GM TPI, Holley Stealth Ram, Kit
Part Number: HLY-550-601
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NKT O2, GM, LS2, LS7, 58x Crank Sensor, Kit
Part Number: HLY-550-603N
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, GM, LS2, LS7, 58x Crank Sensor, Kit
Part Number: HLY-550-603
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Alternators, Serpentine, 12 V, 105 amps, Natural, Bracket, Pulley, Belt, Fasteners, Ford, 7.3L Godzilla, Kit
Part Number: HLY-20-380
Not Yet Reviewed
Estimated Ship Date: Mar 10, 2026 if ordered today
Estimated Ship Date: Mar 10, 2026 if ordered today
Engine Management Systems, HP EFI, ECU and Harness, Connects 16-Injectors, 8-Coils, Bosch O2, Wideband, Ford, Lincoln, Mercury, 2V, 4.6L, 5.4L, Kit
Part Number: HLY-550-616
Estimated Ship Date: Mar 9, 2026 if ordered today
Estimated Ship Date: Mar 9, 2026 if ordered today
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, Wideband, CANBUS, Chevy, LS, 5.7L, Kit
Part Number: HLY-550-602
Estimated Ship Date: Mar 9, 2026 if ordered today
Estimated Ship Date: Mar 9, 2026 if ordered today
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Bosch O2 Sensor, Wideband, CANBUS, Ford, 4.6L, Kit
Part Number: HLY-550-628
Not Yet Reviewed
Estimated Ship Date: Mar 10, 2026 if ordered today
Estimated Ship Date: Mar 10, 2026 if ordered today
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NKT O2 Sensor, GM, LS, 24x Crank Sensor, Kit
Part Number: HLY-550-602N
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NTK O2, Wideband, CANBUS, Ford, Multi-Point, Kit
Part Number: HLY-550-606N
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Sensors, Replacement, O2 Sensor, Bosch, Wideband, 4-Wire, 0-1V Range, Thread-in Style, 4 Flat Female Harness, for Commander 950, Each
Part Number: HLY-534-198
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NTK O2, Wideband, Universal, Un-terminated, Kit
Part Number: HLY-550-605N
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Bosch O2 Sensor, Wideband, CANBUS, Ford, 4-valve, 4.6L, 5.4L, Kit
Part Number: HLY-550-617
Estimated Ship Date: Mar 9, 2026 if ordered today
Estimated Ship Date: Mar 9, 2026 if ordered today
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