Holley Performance Carbs & More

Legendary Holley carburetors have powered professional racers to victory for years, and you can bolt the same technology onto your engine. Every Holley carb is built...

Legendary Holley carburetors have powered professional racers to victory for years, and you can bolt the same technology onto your engine. Every Holley carb is built in the USA and 100-percent flow tested for no-hassle, out-of-the-box performance. Holley fuel pumps, fuel injectors, throttle bodies, and EFI system are manufactured using that same proven quality control. Bring a renowned Holley carburetor, fuel pump, or any other high-quality air and fuel system part to your street machine, competition vehicle, boat, or daily driver. Shop Holley at Summit Racing now!

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Results 1 - 25 of 107

Holley GM Transmission Wiring Harnesses 558-455

Transmission Harness, Holley EFI, Transmission Control Harness, GM 4L60E, Plug-and-Play, Build in relay, for Dominator EFI ECU, Each

Part Number: HLY-558-455

Not Yet Reviewed

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Holley EFI ECU Connector Kits 570-103

Weatherproof Connectors, Holley EFI, GM LSx Engine, Main Harness Connectors, Connectors, Pins, Seals, Cavity Plugs included, Kit

Part Number: HLY-570-103

5.0 out of 5 stars ( 1 )

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Holley Wiring Harness Connectors 570-216

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

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Holley EFI ECU Connector Kits 570-102

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: May 4, 2026 if ordered today

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Estimated Ship Date: May 4, 2026 if ordered today

Holley Terminator X Max GM Gen V LT Direct Injection Kits 550-1624

Fuel Injection Systems, Terminator X Max, LT4, Direct Injection, ECM, Self Tuning, Power Adder Compatible, Wiring Harness, Oxygen Sensor. GM Late, Kit

Part Number: HLY-550-1624

Not Yet Reviewed

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Holley Terminator X Max GM Gen V LT Direct Injection Kits 550-1634-6

Fuel Injection Systems, Terminator X Max, LT4, Direct Injection, ECM, Transmission Controller, 6L80E Power Adder Compatible, GM Late ,Kit

Part Number: HLY-550-1634-6

Not Yet Reviewed

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Holley Terminator X Max GM Gen V LT Direct Injection Kits 550-1633-6

Fuel Injection Systems, Terminator X Max, LT4, Direct Injection, ECM, Transmission Controller, 6L80E Power Adder Compatible, GM Early ,Kit

Part Number: HLY-550-1633-6

Not Yet Reviewed

Estimated Ship Date: May 4, 2026 if ordered today

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Estimated Ship Date: May 4, 2026 if ordered today

Holley EFI Terminator X GM GDI Controllers 554-150

Fuel Injection System Controllers, EFI, Black Plastic, Multi Port, Chevrolet. Each

Part Number: HLY-554-150

Not Yet Reviewed

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Holley Sniper Transmission Controller Harnesses 558-405

Transmission Harness, Holley EFI, Pre-terminated, GM, 1996-2008, 4L60E, 4L80E Transmissions, Each

Part Number: SNE-558-405

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Holley Wiring Harness Connectors 570-200

Weatherproof Connectors, Holley EFI, Wideband Connector, Main Harness Side, Metripack, 8-pin Male, Black Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-200

Not Yet Reviewed

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Holley Wiring Harness Connectors 570-203

Weatherproof Connectors, Holley EFI, Universal Ignition Connector, Main Harness, Metripack, 10-pin Female, Black Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-203

2.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Holley Wiring Harness Connectors 570-201

Weatherproof Connectors, Holley EFI, Injector Connector, Main Harness Side, Metripack, 10-pin Male, Gray Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-201

Not Yet Reviewed

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Holley Wiring Harness Connectors 570-204

Weatherproof Connectors, Holley EFI, Ignition, Sub-harness Connector, Metripack, 10-pin Male, Black Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-204

Not Yet Reviewed

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Holley Wiring Harness Connectors 570-223

Weatherproof Connectors, Holley EFI, Replacement, Hall Effect Sensor Connector, Metripack, 3-pin Female, Black, Pins, Seals, TPA, for 554-118, Each

Part Number: HLY-570-223

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Holley Wiring Harness Connectors 570-209

Weatherproof Connectors, Holley EFI, Input/Output Connector, Main Harness Side, Metripack, 8-pin Female, Black Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-209

Not Yet Reviewed

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Holley Wiring Harness Connectors 570-217

Weatherproof Connectors, Holley EFI, LS MAP/CPS Connector, Main Harness, Metripack, 3-pin Female, Gray Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-217

Not Yet Reviewed

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Holley Wiring Harness Connectors 570-234

Weatherproof Connectors, Holley EFI, Hemi Cam/Crank Connector, Main Harness, APEX 1.2, 3-pin, Female, Black Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-234

Not Yet Reviewed

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Holley Connector Terminal Pins 571-107

Wiring Connector Replacement Parts, Holley EFI, Replacement, Terminal Pins, Female, GT150, 16-18 gauge wire, 100-piece, Set

Part Number: HLY-571-107

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Holley Wiring Harness Connectors 570-208

Weatherproof Connectors, Holley EFI, Odd/Even Coil Connector, Sub-Harness Side, Metripack, 8-pin Male, Gray Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-208

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Holley Connector Terminal Pins 571-103

Wiring Connector Replacement Parts, Holley EFI, Replacement, Terminal Pins, Male, GT150, 20-22 gauge wire, 100-piece, Set

Part Number: HLY-571-103

Not Yet Reviewed

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Holley Connector Terminal Pins 571-104

Wiring Connector Replacement Parts, Holley EFI, Replacement, Terminal Pins, Female, Metri-Pack, 20-22 gauge wire, 100-piece, Set

Part Number: HLY-571-104

Not Yet Reviewed

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Holley Wiring Harness Connectors 570-205

Weatherproof Connectors, Holley EFI, Knock Sensor Connector, MPFI Universal Harness, Metripack, 3-pin Male, Black Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-205

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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