Availability
Fuel Injection System Wiring Harnesses
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
Wiring Harness, Fuel Injection, GM, TPI, Engine Swap, Universal, Kit
Part Number: PRF-60103
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harness, Fuel Injector Sub-Harness, EV6, Nexus Rebel LS, Chevrolet, LS, Each
Part Number: HTH-HT-186502
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection System Wiring Harnesses, Holley EFI, Terminator Stealth 2x4, Upgrade Main Harness, Plug-and-Play, Universal, Kit
Part Number: HLY-558-121
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harnesses, Holley EFI, Main Harness, 24X LS TBI, for Terminator, Terminator Stealth, Throttle Body Systems, Chevy, Each
Part Number: HLY-558-111
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection Wiring Harnesses, Holley EFI, CAN Adapter/Power Harness, Pre-Terminated, Plug-and-Play, 2-Pin Holley to 4-Pin CAN Device, Each
Part Number: HLY-558-430
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection System Wiring Harnesses, EFI CAN Splitters, 48 in. Length, for Use with Holley Terminator X or Sniper EFI Systems, Each
Part Number: SUM-890521
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection Systems Wiring Harnesses, Dominator EFI, J4 Auxiliary Harness, MPFI, Speed Density/Throttle, 26 Input/Outputs, Connector Included, Kit
Part Number: HLY-558-404
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harness, Fuel Injection System, Standalone, Drive-By-Wire, LS1, Kit
Part Number: TSN-WH1210
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection System Wiring Harnesses, Dominator EFI, GM LSx, Dual Drive-by-Wire Harness, for Throttle Bodies to Dominator EFI Systems, Each
Part Number: HLY-558-411
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection System Wiring Harnesses, Holley EFI, Ford Coyote, Drive-By-Wire Harness, Multi-port Style, for HP/Dominator EFI System, Ford, 5.0L, Kit
Part Number: HLY-558-422
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection System Wiring Harnesses, Holley EFI, Replacement, Injector Driver harness, Plug-and-Play, MPFI, JB2 Connector, for Dominator ECU, Each
Part Number: HLY-558-219
Not Yet Reviewed
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, 7.3 L Godzilla, Drive-by-Wire, Throttle Body Harness, for Terminator X, Ford, Each
Part Number: HLY-558-469
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
PRO 550 V8 COMPLETE HARNESS
Part Number: FCH-3026109037
Not Yet Reviewed
Estimated Ship Date: Nov 3, 2026 if ordered today
Estimated Ship Date: Nov 3, 2026 if ordered today
Fuel Injection System Wiring Harness, Flex Fuel Sensor Pigtail, 6.00 in., Multi-Port, Chevy, LS, Each
Part Number: ICB-WPFLX40
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection System Wiring Harnesses, Holley EFI, Replacement, Gen III Hemi, Injector Harness, Bosch/Jetronic/Holley, for HP, Dominator EFI, Each
Part Number: HLY-558-211
Not Yet Reviewed
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
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
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, EV6 Unterminated, Injector Harness, 36 in. Long, with Pins, Seals, Connector, Kit
Part Number: HLY-558-216
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
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
Not Yet Reviewed
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
Wiring Harnesses, Holley EFI, Gen III Hemi, Throttle Position, Idle Air Controls, Factory Connectors, Chrysler, Dodge, Jeep, Hemi, Late Model, Each
Part Number: HLY-558-116
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection System Wiring Harnesses, Holley EFI, Replacement, Gen III Hemi, Injector Harness, Stock/USCAR Injectors, for HP, Dominator EFI, Each
Part Number: HLY-558-210
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
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