Holley Electrical Wiring

Transmission Harnesses, Holley EFI, Control Harness, F-Body, T-56 Tranny, Plug-and-Play, VSS, Reverse Lockout, for Terminator X, Max X ECUs, Each

Part Number: HLY-558-481

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Estimated Ship Date: Monday 10/13/2025

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Weatherproof Connectors, Holley EFI, J2B Input/Output Connector, OEM Style, Black Plastic, includes Pins, Seals, TPA, Kit

Part Number: HLY-570-346

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/13/2025

Weatherproof Connectors, Holley EFI, J2A Input/Output Connector, OEM Style, Black Plastic, includes Pins, Seals, TPA, Kit

Part Number: HLY-570-345

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/13/2025

Convoluted Tubing, Wire Looms and Wire Sleeves, Holley EFI, Split Wire Loom, Black Nylon, Slip-on Insulation, 0.500 in. I.D., 10 ft. Long, Each

Part Number: HLY-573-106

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 10/13/2025

Wiring Connector Replacement Parts, Holley EFI, Replacement, Terminal Pins, Super Seal, 18-16 gauge wire, 100-piece, Set

Part Number: HLY-571-136

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/13/2025

Weatherproof Connectors, Holley EFI, J4 Input/Output Connector, OEM Style, Black Plastic, includes Pins, Seals, TPA, Kit

Part Number: HLY-570-348

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/13/2025

Convoluted Tubing, Wire Looms and Wire Sleeves, Holley EFI, Split Wire Loom, Black Nylon, Slip-on Insulation, 0.750 in. I.D., 50 ft. Long, Each

Part Number: HLY-573-109

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Estimated Ship Date: Monday 10/13/2025

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Convoluted Tubing, Wire Looms and Wire Sleeves, Holley EFI, Split Wire Loom, Black Nylon, Slip-on Insulation, 0.250 in. I.D., 10 ft. Long, Each

Part Number: HLY-573-102

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 10/13/2025

Relays, Dual Fuel Pump, 40 Amp, 12V, Single Pole, Blade Type, Wire Harness Included, Chrysler, Dodge, Ford, Kit

Part Number: HLY-12-759

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Estimated Ship Date: Monday 10/13/2025

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Wiring Harness Adapters, Sniper EFI 1 Harness to Sniper EFI 2 System, Pre-Terminated, Each

Part Number: SNE-558-489

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/13/2025

Transmission Harnesses, Holley EFI, Control Harness, Tremec TKX-TKO Tranny, Plug-and-Play, VSS, Reverse Lockout, for Terminator Max X ECUs, Each

Part Number: HLY-558-482

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Estimated Ship Date: Monday 10/13/2025

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Electrical Wires, Holley EFI, Shielded Cable, Black Jacket, 7-conductor, Five 18 gauge Wires, Two 20 gauge Wires, Wideband, 25 ft. Spool, Each

Part Number: HLY-572-100

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Estimated Ship Date: Monday 10/13/2025

Weatherproof Connectors, Holley EFI, J3 Input/Output Connector, OEM Style, Black Plastic, includes Pins, Seals, TPA, Kit

Part Number: HLY-570-347

Not Yet Reviewed

Estimated Ship Date: Monday 10/13/2025

Wire Connectors, Holley EFI, ECU Connectors, J1A/J1B Sealed Connectors, 20-22 and 16-18 gauge Wire Pins, Cavity Plugs, Kit

Part Number: HLY-558-448

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/13/2025

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Wire Harnesses, Sniper 2 EFI, Adapter for Pro-Billet Distributer or 2-Wire Magnetic pickup Trigger, Each

Part Number: HLY-558-330

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/13/2025

Wire Connectors, Holley EFI, 4-pin CAN Connector, Main Harness Side, Mizu-P25, 4-pin, Male, Black Plastic, Universal, Each

Part Number: HLY-570-229

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/13/2025

Convoluted Tubing, Wire Looms and Wire Sleeves, Holley EFI, Split Wire Loom, Black Nylon, Slip-on Insulation, 0.750 in. I.D., 10 ft. Long, Each

Part Number: HLY-573-108

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/13/2025

Interconnect Cables, Holley EFI, Sealed USB Cable, Data/Communications, 180 in. Long, Single Male Ends, Each

Part Number: HLY-558-438

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Estimated Ship Date: Monday 10/13/2025

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Convoluted Tubing, Wire Looms and Wire Sleeves, Holley EFI, Split Wire Loom, Black Nylon, Slip-on Insulation, 1.000 in. I.D., 10 ft. Long, Each

Part Number: HLY-573-110

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/13/2025

Wiring Harnesses, Holley EFI, LS1/6, 24X/1X, Main Harness, Plug-and-Play, Extended Length, for Dominator/HP EFI Systems, Chevy, 4.8-6.0L, Each

Part Number: HLY-558-133

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/13/2025

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Wiring Harness, Holley EFI, Gen III Hemi, VVT, Sub-Harness Only, Plug-and -Play, for Terminator X, Terminator X Max EFI, Dodge, 5.7L, 6.4L, Each

Part Number: HLY-558-131

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Estimated Ship Date: Monday 10/13/2025

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Weatherproof Connectors, Holley EFI, J1B Input/Output Connector, OEM Style, 26-pin, Female, Black Plastic, includes Pins, Seals, TPA, Kit

Part Number: HLY-570-344

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Estimated Ship Date: Monday 10/13/2025

Wiring Harnesses, Holley EFI, Gen III Hemi, VVT, SRV, Sub-Harness Only, Plug-and -Play, for Terminator X, Terminator X Max EFI, Dodge, 5.7-6.4L, Each

Part Number: HLY-558-132

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Estimated Ship Date: Monday 10/13/2025

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Switches, Windshield Wiper, Rotary Style, 6 amp, 1 3/8 in. Diameter, Steel Case, Plastic, Black Knob, Two Speed, Push-to-Wash, fit Bezel 553-342, Each

Part Number: HLY-553-343

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/13/2025

Wiring Harnesses, RetroBright, Ground Switched Harness, Easy Installation, Toyota, Land Cruiser, Each

Part Number: HLY-H840

Not Yet Reviewed

Estimated Ship Date: Monday 10/13/2025