Availability
Fuel Injection System Wiring Harnesses
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, Fuel Injection, Multi-Port, Mass Airflow, Chevy, 5.7L, Each
Part Number: PRF-60608
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Engine Wiring Harness, Engine Swap, Front Fuse Block, Extra-Long Length, Chevy, 5.7L LS1, Kit
Part Number: PRF-60509
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection Systems Wiring Harnesses, Dominator EFI, J2B Auxiliary Harness, 8 Additional Inputs, 23 Outputs, Connector Included, Kit
Part Number: HLY-558-402
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
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection System Wiring Harnesses, Holley EFI, Replacement, Main Harness, Terminator EFI Systems, Model 550-405, 550-406, Each
Part Number: HLY-558-414
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection System Wiring Harnesses, Holley EFI, Crank/Cam Ignition Harness, Plug-and-Play, for Ferrous Hall Effect to HP/Dominator Systems, Each
Part Number: HLY-558-431
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wire Harnesses, Sniper EFI, Input/Output Harness, Throttle Body Injection, Speed Density Metered, 10-pin Male Connector, Kit
Part Number: SNE-558-491
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
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 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, Multi-port Injection, Mass Airflow Meter, LS3 w/4L65E Trans Only, Throttle by Wire, Chevy, Kit
Part Number: PRF-60524
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
Wiring Harness, Fuel Injection, Standard Length, Throttle By Wire, Chevy, Pontiac, LS1, 5.7L, Kit
Part Number: PRF-60522
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harnesses, Holley EFI, TFI Ignition, Adapter Harness, for Avenger, HP, Dominator EFI Systems, Each
Part Number: HLY-558-305
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harness, EFI Transplant, Multi-Port, Mass Airflow, Extra-Long, Ford, Small Block, Each
Part Number: PRF-60511
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, Distributor Adapter Harness, Sniper EFI to Holley Dual Sync Distributor, 12 V, Plug-and-Play, Each
Part Number: SNE-558-493
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wire Harnesses, Sniper 2 EFI, Input/Output Harness, Throttle Body Injection, Speed Density Metered, 6-pin Female Connector, Each
Part Number: SNE-558-497
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
Wiring Harnesses, Holley EFI, Main Harness, 58X LS TBI, for Terminator, Terminator Stealth, Throttle Body Systems, Chevy, Each
Part Number: HLY-558-112
Not Yet Reviewed
Estimated Ship Date: May 6, 2026 if ordered today
Estimated Ship Date: May 6, 2026 if ordered today
Fuel Injection System Wiring Harnesses, Holley EFI, Pro-Dash, Input/Output, Unterminated, 2 and 3 Conductor Cable, 10 ft. Long, Pins, Plugs, Each
Part Number: HLY-558-456
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harnesses, Holley EFI, Coyote, with TI-VCT/Stock Coils, Main Harness, MPFI, for HP, Dominator, EFI Systems, Ford, 5.0L, Each
Part Number: HLY-558-110
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
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
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster