Fuel Injection System Wiring Harnesses

Fuel Injection System Wiring Harnesses, Holley EFI, GM LS 58X Crank Sensor, Power, Bosch Injector, Main Harnesses, for HP, Dominator ECUs, Kit

Part Number: HLY-558-502

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Fuel Injection System Wiring Harnesses, Holley EFI, Coyote Ti-VCT, Main Harness, Plug-and-Play, Drive-by-Wire, with Holley Smart Coils, Ford, 5.0L Kit

Part Number: HLY-558-122

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Wiring Harness, Fuel Injection, Emission Harness, Multi-Port, Mass Airflow, Chevy, Pontiac, 5.7L, V8, Each

Part Number: PRF-60312

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Wiring Harnesses, Holley EFI, Gen III Hemi, Throttle Position, Idle Air Controls, Factory Connectors, Chrysler, Dodge, Jeep, Hemi, Early Model, Each

Part Number: HLY-558-115

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Fuel Injection Systems Wiring Harnesses, Holley EFI, Universal Harness, Four Cylinder, EV14 Injectors, 205 lbs.-hr. with HP/Dominator EFI, Each

Part Number: HLY-558-440

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Wiring Harness, Pro Series, Vortec, 4L60E, 5-pin MAF Sensor, LS1 O2 Sensors, EV6 Injectors, Truck Intake, Each

Part Number: WRS-WPVRTUVT4L60

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Wiring Harness, Pro Series, GTO LS1, 4L60E Auto Transmission, 3-pin MAFS, LS2 O2 Sensors, EV1 Injectors, Each

Part Number: WRS-WPLS1UG4L60

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Fuel Injection Wiring Harness, Pro Series, T56, Chevy, Each

Part Number: WRS-PROLS3UNIT56

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Wiring Harness, Fuel Injector, FAST XFI, Ford, Each

Part Number: FST-301203

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Wiring Harnesses, Holley EFI, Main Harness with Stock Coils, 7.3L Godzilla, Ford Each

Part Number: HLY-558-140

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Fuel pressure regulator harness, Bosch CP3 regulator, Duramax, Each

Part Number: FLE-S0398

2.0 out of 5 stars ( 2 )

Estimated Ship Date: Nov 30, 2026 if ordered today

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Fuel Injection System Wiring Harnesses, Holley EFI, Terminator, Throttle Body Systems, Plug-and-Play, Upgrade Harness, for 205 lb./hr. Injectors, Each

Part Number: HLY-558-439

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Estimated Ship Date: Nov 9, 2026 if ordered today

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INJECTOR HARNESS, LS2-18726543 FIRE

Part Number: FST-301209

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Estimated Ship Date: Dec 21, 2026 if ordered today

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Wiring Harness, Fuel Injector, FAST XFI, Chrysler, Dodge, Ram, Each

Part Number: FST-301208

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Estimated Ship Date: Dec 21, 2026 if ordered today

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Wiring Harness, Gen III Vortec, Chevy, Small Block, Each

Part Number: PRF-60322

5.0 out of 5 stars ( 1 )

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Wiring Harness, EGR Adapter Harness, Chevy, Each

Part Number: PRF-60119

4.0 out of 5 stars ( 1 )

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Wiring Harness, EFI, Speed Density, GM Ram Jet, Kit

Part Number: RFW-RJ42

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Wiring Harness, Gen III Vortec, Chevy, Small Block, LS1, Each

Part Number: PRF-60324

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Emission Wiring Harness, Rear Oxygen Sensor and Fuel Tank Pressure Sensor, Each

Part Number: PRF-60320

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Wiring Harness, Pro Series, 2004 GTO LS1, T56 Manual Transmission, 3-pin MAFS, LS2 O2 Sensors, EV1 Injectors, Each

Part Number: WRS-WPLS1UGT56

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Fuel injection wiring harness WIRING HARNESS, FAST XFI MAIN,FORD SCJ MODULAR

Part Number: FST-301150

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Estimated Ship Date: Dec 21, 2026 if ordered today

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Wiring Harness, Fuel Injector, FAST XFI, Ford, Each

Part Number: FST-301210

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Estimated Ship Date: Dec 21, 2026 if ordered today

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Harness, Fuel Injection, Standard Replacement, Direct Injection, Pulse Width Modulation, IC Coorporation, International, Medium/Heavy Duty, Each

Part Number: RNB-904-476

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Harness, Fuel Injection, Standard Replacement, BlueBird, Crane Carrier, Ford, Freightliner, Kenworth, Peterbilt, Pierce, Sterling, Ea

Part Number: RNB-904-479

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Fuel Injection System Wiring Harnesses, Holley EFI, 2V Modular EFI, with Main, Power, Injector Harnesses, for HP, Dominator ECU, Ford, 4.6-5.4L, Kit

Part Number: HLY-558-505

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Estimated Ship Date: Nov 9, 2026 if ordered today

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