Fuel Injection System Wiring Harnesses

Wiring Harnesses, Holley EFI, Benchtop Harness, Test Harness, EFI Input Connectors, Power Switch, for HP, Dominator, Terminator, Sniper ECUs, Each

Part Number: HLY-558-127

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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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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: Today

Fuel Injection System Wiring Harnesses, Holley EFI, Main Power Harness, Coyote Ti-VCT, Plug-and-Play, for Dominator/HP EFI Systems, Ford, 5.0L, Each

Part Number: HLY-558-319

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Wiring Harness, Fuel Injector Sub-Harness, EV1, Nexus Rebel LS, Chevrolet, LS, Each

Part Number: HTH-HT-186501

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Fuel Injection System Wiring Harnesses, Holley EFI, Terminator Stealth 2X4, Primary Throttle Body Sub Harness, Pre-Terminated, Plug-and-Play, Each

Part Number: HLY-558-459

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Estimated Ship Date: Nov 9, 2026 if ordered today

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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

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Fuel Injection System Wiring Harnesses, Holley EFI, 6 Cylinder, MPFI, SFI, TBI, Injector Harness, for HP, Dominator EFI Systems, Universal, Each

Part Number: HLY-558-203

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Main Wiring Harness, EZ-EFI 2.0 Replacement, Throttle Body Injection Style, Universal, FAST, Each

Part Number: FST-30314

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Estimated Ship Date: Dec 21, 2026 if ordered today

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HARNESS, FAST ANALOG INPUT KIT

Part Number: FST-301402

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Estimated Ship Date: Dec 21, 2026 if ordered today

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Fuel Injection System Wiring Harness, Nexus Universal V8 Injector Breakout Harness, Multi-port Fuel Injection Style, Each

Part Number: HTH-HT-186003

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Fuel Injection System Wiring Harnesses, FiTech, EFI, Injector Sub Harness, Delphi Multec 2, Each

Part Number: FIF-70050-24

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Estimated Ship Date: Jan 25, 2027 if ordered today

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FT550 6 CYLINDER UNIVERSAL B EXPANSION HARNESS

Part Number: FCH-2002008377

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Wiring Harness, Nexus Rebel, ECU, Plug-and-Play, Standard Length, Chevy, LS, Each

Part Number: HTH-HT-186500

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Fuel Injection Wiring Harness, 10 Channel Peak and Hold Injector Driver Harness, Each

Part Number: AVM-35-3900

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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

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Main Wiring Harness, EZ-EFI 2.0 Replacement, Throttle Body Injection Style, Universal, FAST, Each

Part Number: FST-30308

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 21, 2026 if ordered today

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Fuel Injection System Wiring Harnesses, FiTech, EFI, LS Coil Extension Harness, 36 in. Long, Each

Part Number: FIF-70050-26

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Estimated Ship Date: Jan 25, 2027 if ordered today

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Fuel Injection System Wiring Harnesses, FiTech, EFI, Injector Extension Harness, 6 Position, 24 in.Long, Each

Part Number: FIF-70050-25

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Estimated Ship Date: Jan 25, 2027 if ordered today

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Wiring Harness, Fuel Injector, Y-Adapter Harness, FAST XFI, Each

Part Number: FST-301205

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Estimated Ship Date: Dec 21, 2026 if ordered today

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