Availability
Fuel Injection System Wiring Harnesses
Fuel Injection System Wiring Harnesses, Holley EFI, Coyote Ti-VCT, Main Harness, Plug-and-Play, Drive-by-Wire, with Holley Smart Coils, Ford, 5.0L Kit
Part Number: HLY-558-122
Not Yet Reviewed
Estimated Ship Date: May 1, 2026 if ordered today
Estimated Ship Date: May 1, 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: Today
Estimated Ship Date: Today
Wiring Harness, Flex Fuel Sensor Harness, Buick, Cadillac, Chevy, GMC, Each
Part Number: NAL-13352241
Estimated Ship Date: Today
Estimated Ship Date: Today
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: Today
Estimated Ship Date: Today
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: Today
Estimated Ship Date: Today
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: Today
Estimated Ship Date: Today
Wiring Harness, Fuel Injector, FAST XFI, Chevy, 18736542 Firing Order, Each
Part Number: FST-301201
Estimated Ship Date: Jun 15, 2026 if ordered today
Estimated Ship Date: Jun 15, 2026 if ordered today
Wiring Harnesses, Holley EFI, Ford 2V/4V Modular, Main Harness, Multi-Port Fuel Injection, for Holley Smart Coils, HP EFI System, Ford, 4.6-5.4L, Each
Part Number: HLY-558-113
Not Yet Reviewed
Estimated Ship Date: May 4, 2026 if ordered today
Estimated Ship Date: May 4, 2026 if ordered today
Extension Harness, Intake Air Temperature, 2013 - 2017 6.7L Cummins, Each
Part Number: FLE-S0397
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Wiring Harnesses, Holley EFI, Main Harness with Smart Coils, 7.3L Godzilla, Ford Each
Part Number: HLY-558-141
Not Yet Reviewed
Estimated Ship Date: May 4, 2026 if ordered today
Estimated Ship Date: May 4, 2026 if ordered today
Wiring Harness, Fuel Injector, FAST XFI, Chevy, 18436572 Firing Order, Each
Part Number: FST-301200
Not Yet Reviewed
Estimated Ship Date: Jun 15, 2026 if ordered today
Estimated Ship Date: Jun 15, 2026 if ordered today
Fuel Injection System Wiring Harnesses, Holley EFI, Replacement, Injector Harness, Unterminated Base, Bosch EV1 Style, with Connector, 16-piece, Set
Part Number: HLY-558-207
Not Yet Reviewed
Estimated Ship Date: Apr 30, 2026 if ordered today
Estimated Ship Date: Apr 30, 2026 if ordered today
Fuel Injection System Wiring Harnesses, Holley EFI, GM LS 58X Crank Sensor, Power, Bosch Injector, Main Harnesses, for HP, Dominator ECUs, Kit
Part Number: HLY-558-502
Not Yet Reviewed
Estimated Ship Date: May 4, 2026 if ordered today
Estimated Ship Date: May 4, 2026 if ordered today
Wiring Harness, Pro Series, 6.0L LS2, Magnum Manual Transmission, 5-pin MAF, EV6 Injectors, Each
Part Number: WRS-WPLS2UGT5MEP
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Fuel Injection System Wiring Harnesses, Holley EFI, Replacement, Ford V8, Injector Harness, Multi-Port, for HP, Dominator EFI Systems, Each
Part Number: HLY-558-209
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Wiring Harnesses, Holley EFI, Ford 2V/4V Modular, Main Harness, Multi-port Fuel Injection, for HP, Dominator, EFI Systems, Ford, 4.6-5.4L, Each
Part Number: HLY-558-108
Not Yet Reviewed
Estimated Ship Date: May 1, 2026 if ordered today
Estimated Ship Date: May 1, 2026 if ordered today
Wiring Harness, Fuel Injection, GM, TPI, Front Mount Fuse Block, Spade Fuse, Extra-Long Harness, Universal, Kit
Part Number: PRF-60203
Estimated Ship Date: Today
Estimated Ship Date: Today
Fuel Injection System Wiring Harnesses, Holley EFI, Coyote Ti-VCT, with Main, Power, Injector, Coil Harnesses, for HP, Dominator ECU, Ford, 5.0L, Kit
Part Number: HLY-558-510
Not Yet Reviewed
Estimated Ship Date: May 4, 2026 if ordered today
Estimated Ship Date: May 4, 2026 if ordered today
Harness Adapter, IAC to FAST EFI, Chevy, Pontiac, Each
Part Number: FST-308023
Estimated Ship Date: Today
Estimated Ship Date: Today
Fuel pressure regulator harness, Bosch CP3 regulator, Duramax, Each
Part Number: FLE-S0398
Estimated Ship Date: May 20, 2026 if ordered today
Estimated Ship Date: May 20, 2026 if ordered today
Wiring Harness, Fuel Injector, FAST XFI, Ford, Each
Part Number: FST-301203
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Fuel Injection System Wiring Harnesses, Holley EFI, Terminator, Throttle Body Systems, Plug-and-Play, Upgrade Harness, for 205 lb./hr. Injectors, Each
Part Number: HLY-558-439
Not Yet Reviewed
Estimated Ship Date: May 4, 2026 if ordered today
Estimated Ship Date: May 4, 2026 if ordered today
Fuel Injections System Wiring Harnesses, Gen III Hemi, Drive-By-Wire Harness, Late Pedal, OE Connectors, Plug-and-Play, Chrysler, Dodge, Jeep, Kit
Part Number: HLY-558-418
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Wiring Harnesses, Holley EFI, Gen III Hemi, Throttle Position, Idle Air Controls, Factory Connectors, Chrysler, Dodge, Jeep, Hemi, Early Model, Each
Part Number: HLY-558-115
Not Yet Reviewed
Estimated Ship Date: May 4, 2026 if ordered today
Estimated Ship Date: May 4, 2026 if ordered today
Wiring Harness, Pro Series, GTO LS1, 4L60E Auto Transmission, 3-pin MAFS, LS2 O2 Sensors, EV1 Injectors, Each
Part Number: WRS-WPLS1UG4L60
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
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