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Fuel Injection System Wiring Harnesses

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Fuel Injection System Wiring Harnesses

Harness the power and exceptional drivability of fuel injection for your ride. Our selection of fuel injection wiring harnesses makes it easy to bring throttle body,...

Harness the power and exceptional drivability of fuel injection for your ride. Our selection of fuel injection wiring harnesses makes it easy to bring throttle body, multi-port, or sequential multi-port fuel injection to your vehicle. Whether you’re adding an aftermarket fuel injection system to your existing engine, swapping in a completely new fuel-injected engine, or just replacing old wiring, we’ve got what you need. We carry complete EFI wiring harnesses from Holley, FAST, Ron Francis Wiring, Accel, Painless Performance, and many others. Bring fuel injection to darn near anything—vintage hot rods,...

Harness the power and exceptional drivability of fuel injection for your ride. Our selection of fuel injection wiring harnesses makes it easy to bring throttle body, multi-port, or sequential multi-port fuel injection to your vehicle. Whether you’re adding an aftermarket fuel injection system to your existing engine, swapping in a completely new fuel-injected engine, or just replacing old wiring, we’ve got what you need. We carry complete EFI wiring harnesses from Holley, FAST, Ron Francis Wiring, Accel, Painless Performance, and many others. Bring fuel injection to darn near anything—vintage hot rods, street rods, replica cars, or whatever—with fuel injection system wiring harnesses from Summit Racing.

Individual Parts

Results 1 - 25 of 41

Wiring Pigtail, GM Flex Fuel Sensor, 6.00 in., Multi-Port, Chevy, LS, Each

Part Number: SUM-890135

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Fuel Injection System Wiring Harnesses, Holley EFI, GM Gen V LTx, Drive-by-Wire, Throttle Body Harness, for Terminator X and X Max ECUs, Each

Part Number: HLY-558-468

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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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 Harness, Flex Fuel Sensor Pigtail, 6.00 in., Multi-Port, Chevy, LS, Each

Part Number: ICB-WPFLX40

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Fuel Injection System Wiring Harnesses, Holley EFI, Ford GT500, 3V Drive-by-Wire, Throttle Body Harness, Plug-and-Play, Ford, Mustang, 4.6L, 5.4L, Kit

Part Number: HLY-558-461

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PRO 550 V8 COMPLETE HARNESS

Part Number: FCH-3026109037

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Wiring Harness, Ford 5.0 Coyote Telorvek, Modular, Kit

Part Number: RFW-CY15

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Estimated Ship Date: Mar 23, 2026 if ordered today

Fuel Injection System Wiring Harness, RB26DETT Engine, Multi-Port Injection, Each

Part Number: WRS-WSRB26R32PKG

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Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Wiring Harness, EGR Adapter Harness, Chevy, Each

Part Number: PRF-60119

4.0 out of 5 stars ( 1 )

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Engine and Transmission Main Harness, OEM Series, for Nissan, Skyline, R32 GT-R, RB26DETT, Manual Transmission, Kit

Part Number: WRS-RB26R32-MAIN

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Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

FT550 6 CYLINDER UNIVERSAL B EXPANSION HARNESS

Part Number: FCH-2002008377

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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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2014+ GM GEN V LT L86/L83 WITH T56 STANDALONE WIRING HARNESS

Part Number: TSN-WH1222

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Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

2014+ GM GEN V LT L86/L83 WITH 10L80/10L90 STANDALONE WIRING HARNESS

Part Number: TSN-WH1223

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Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

2014+ GM GEN V LT L86/L83 WITH 6L80E STANDALONE WIRING HARNESS

Part Number: TSN-WH1221

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Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

2003-2007 LS TRUCK WITH 4L60E (05-08 15 PIN) STANDALONE WIRING HARNESS, DRIVE-BY-WIRE

Part Number: TSN-WH1212-2

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

2014+ GEN V LT L83/L86 FUEL INJECTIOR WIRING HARNESS, PASSENGER SIDE

Part Number: TSN-WH1221-2

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

WIRING, INJECTOR, 2015-2018

Part Number: MOP-68270198AA

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Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

HARNESS, INJECTOR, 2012-2017

Part Number: MOP-04892871AA

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Engine and Transmission Harness Combo, OEM Series, for Nissan, Skyline, R32 GT-R, RB26DETT, Manual Transmission, Kit

Part Number: WRS-RB26R32-COMB

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

FUEL RAIL WIRING, 1996-1997

Part Number: MOP-04687267AB

Not Yet Reviewed

Estimated Ship Date: Mar 26, 2026 if ordered today

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Estimated Ship Date: Mar 26, 2026 if ordered today

WIRING, FUEL RAIL, 2004-2005

Part Number: MOP-04868908AB

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Estimated Ship Date: Mar 26, 2026 if ordered today

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Estimated Ship Date: Mar 26, 2026 if ordered today

WIRING, FUEL RAIL, 2005-2006

Part Number: MOP-04869538AE

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Estimated Ship Date: Mar 26, 2026 if ordered today

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Estimated Ship Date: Mar 26, 2026 if ordered today

Wiring Harness, Fuel Injector Harness, OEM Replacement, Dodge, Truck, L6, 5.9L, Each

Part Number: CBM-05139865AA

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Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

WIRING, FUEL RAIL, 2001-2003

Part Number: MOP-04868408AD

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Estimated Ship Date: Apr 1, 2026 if ordered today

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Estimated Ship Date: Apr 1, 2026 if ordered today