Fuel Injection System Wiring Harnesses

Wiring Harness, Holley EFI, V8 Over Manifold, Bosch Injector Harness, for Avenger, Dominator, HP EFI Systems, Chrysler, GM, Cylinder Orientation, Kit

Part Number: HLY-558-200

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Wiring Harnesses, Holley EFI, Universal, Unterminated, Main Harness, Multi-port Fuel Injection, for HP, Dominator, EFI Systems, with Connectors, Each

Part Number: HLY-558-105

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Wiring Harnesses, Holley EFI, Replacement, Main Harness, Multi-port Fuel Injection, for HP, Dominator, EFI Systems, Universal, Each

Part Number: HLY-558-104

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Wire Harnesses, Sniper EFI, Main Harness, Throttle Body Injection, Speed Density Metered, 6 ft. Wire Loom, Black, Split Braided, Kit

Part Number: SNE-558-490

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Fuel Injection System Wiring Harnesses, Holley EFI, Replacement, Ford V8, Evenly Spaced, Injector Harness, Bosch/Jetronic, for HP, Dominator EFI, Each

Part Number: HLY-558-213

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Fuel Injection System Wiring Harnesses, Holley EFI, Multi-port Fuel Injection, Coil-on-Plug, Dual CANbus, for Holley HP, Dominator EFI, Universal, Kit

Part Number: HLY-558-117

Not Yet Reviewed

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Wire Harnesses, Sniper EFI, Input/Output Harness, Throttle Body Injection, Speed Density Metered, 10-pin Male Connector, Kit

Part Number: SNE-558-491

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Fuel Injection System Wiring Harnesses, Holley EFI, Replacement, Ford V8, Evenly Spaced, Injector Harness, USCAR/EV6, for HP, Dominator EFI, Each

Part Number: HLY-558-212

Not Yet Reviewed

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Fuel Injection System Wiring Harnesses, Holley EFI, Unterminated, Ignition Harness, with Pins, Seals, Connector, for HP, Dominator EFI Systems, Kit

Part Number: HLY-558-306

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Fuel Injection System Wiring Harnesses, Holley EFI, Replacement, EV6 Unterminated, Injector Harness, 36 in. Long, with Pins, Seals, Connector, Kit

Part Number: HLY-558-216

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Fuel Injection System Wiring Harnesses, Holley EFI, Fuel Injector Harness, Unterminated, Bosch Style, for HP, Dominator EFI Systems, Universal, Each

Part Number: HLY-558-204

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Fuel Injection System Wiring Harnesses, Holley EFI, Universal, V8 MPFI Harness, with Main, Power, Bosch Injector Harnesses, for HP, Dominator ECU, Kit

Part Number: HLY-558-504

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Fuel Injection System Wiring Harnesses, Holley EFI, GM LS 24X Crank Sensor, Includes Power, LS1 Injector, Main Harnesses, for HP, Dominator ECUs, Kit

Part Number: HLY-558-500

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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• Special Order