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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.
Wiring Harness, Fuel Injection, Multi-Port, Mass Airflow, Chevy, LS 4.8, 5.3, 6.0L, Each
Part Number: PRF-60217
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection Systems Wiring Harnesses, Holley EFI, Drive-by-Wire Harness, GM LSx, for Dominator EFI Systems, 6-Pin, Each
Part Number: HLY-558-406
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection System Wiring Harnesses, Holley EFI, CAN Splitter Assembly, Pre-Terminated, Plug-and-Play, for Terminator X, Sniper EFI Systems, Each
Part Number: HLY-558-465
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harness, Fuel Injection, Multi-Port, Mass Airflow, Chevy, 4.8/5.3/6.0L, Kit
Part Number: PRF-60221
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harnesses, Holley EFI, Replacement, LS1/6, 24X/1X Main Harness, Mass Airflow Metered, for HP, Dominator, EFI Systems Only, Chevy, 5.7L, Each
Part Number: HLY-558-102
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harnesses, Holley EFI, Replacement, LS Style, 58X/4X Main Harness, Speed Density, for HP, Dominator, EFI Systems Only, Chevy, 6.0-7.0L, Each
Part Number: HLY-558-103
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harness, Fuel Injection, GM, MFI, Front Mount Fuse Block, Spade Fuse, 4L60E Trans, Universal, Kit
Part Number: PRF-60502
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wire Harnesses, Sniper EFI, HyperSpark, Main Harness, Throttle Body Injection, Plug-n-Play, 40 amp Relay Included, Each
Part Number: SNE-558-328
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harness, Fuel Injection, Mechanical Throttle Body, Chevy, Small Block, Each
Part Number: PRF-60617
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
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
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harnesses, Holley EFI, Replacement, Main Harness, Multi-port Fuel Injection, for HP, Dominator, EFI Systems, Universal, Each
Part Number: HLY-558-104
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harness, Cummins Diesel, 5.9L, Facilitates Engine Transplants, Each
Part Number: PRF-60250
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
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
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harness, Fuel Injection, Multi-Port, Mass Airflow, Chevy, 4.3L, V6, Each
Part Number: PRF-60214
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
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: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harness, Fuel Injection System, Standalone, Drive-By-Cable, LS1, Kit
Part Number: TSN-WH1200
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection System Wiring Harnesses, Holley EFI, Replacement, Auxiliary Harness, J1A/B Inputs/Outputs, for Terminator, Dominator EFI Systems, Each
Part Number: HLY-558-400
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harness, Gen III Vortec, Chevy, 4.8/5.3/6.0L, Each
Part Number: PRF-60218
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Pigtail, GM Flex Fuel Sensor, 6.00 in., Multi-Port, Chevy, LS, Each
Part Number: SUM-890135
Not Yet Reviewed
Estimated Ship Date: Aug 11, 2025 if ordered today
Estimated Ship Date: Aug 11, 2025 if ordered today
Need It Sooner? We recommend these similar substitute parts:
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
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection System Wiring Harnesses, Holley EFI, Drive-by-wire Harness, GM LSx Early Truck, MPFI, SFI, TBI, for Dominator EFI Systems, Each
Part Number: HLY-558-429
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection System Wiring Harnesses, Holley EFI, CAN Adapter Harness, Male to Female Adapter, 48 in. Long, for Racepak or CAN Device, Each
Part Number: HLY-558-452
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection System Wiring Harnesses, Holley EFI, Auxiliary Input/Output Harness, Terminator EFI, Gains 4 Inputs/1 Output, Each
Part Number: HLY-558-420
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
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: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harnesses, Holley EFI, HEI Distributor, Adapter Harness, Small Cap, Computer Controlled, for Avenger, HP, Dominator EFI Systems, Each
Part Number: HLY-558-304
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
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