Availability
Fuel Injection System Wiring Harnesses
Wiring Harness, Fuel Injection, GM, TPI, Front Mount Fuse Block, Spade Fuse, Extra-Long Harness, Universal, Kit
Part Number: PRF-60203
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
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: Nov 3, 2026 if ordered today
Estimated Ship Date: Nov 3, 2026 if ordered today
Wiring Harness, Fuel Injector, FAST XFI, Ford, Each
Part Number: FST-301204
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
LS2/LS3 Extension Harness With TPS Output wire
Part Number: NXO-00-52042
Not Yet Reviewed
Estimated Ship Date: Dec 21, 2026 if ordered today
Estimated Ship Date: Dec 21, 2026 if ordered today
Harness Adapter, IAC to FAST EFI, Chevy, Pontiac, Each
Part Number: FST-308023
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel pump harness, Dual CP3, Cummins, Each
Part Number: FLE-FPE-CP3X2
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harness, Fuel Injector, FAST XFI, Chevy, 18736542 Firing Order, Each
Part Number: FST-301201
Estimated Ship Date: Dec 21, 2026 if ordered today
Estimated Ship Date: Dec 21, 2026 if ordered today
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: Nov 3, 2026 if ordered today
Estimated Ship Date: Nov 3, 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: Nov 3, 2026 if ordered today
Estimated Ship Date: Nov 3, 2026 if ordered today
Fuel Injection System Wiring Harnesses, Holley EFI, Terminator Stealth 2X4, Primary Throttle Body Sub Harness, Pre-Terminated, Plug-and-Play, Each
Part Number: HLY-558-459
Not Yet Reviewed
Estimated Ship Date: Nov 3, 2026 if ordered today
Estimated Ship Date: Nov 3, 2026 if ordered 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: Nov 3, 2026 if ordered today
Estimated Ship Date: Nov 3, 2026 if ordered today
Fuel Injection System Wiring Harnesses, Holley EFI, Universal, V8 MPFI Harness, with Main, Power, Bosch Injector Harnesses, for HP, Dominator ECU, Kit
Part Number: HLY-558-504
Not Yet Reviewed
Estimated Ship Date: Nov 3, 2026 if ordered today
Estimated Ship Date: Nov 3, 2026 if ordered today
Wiring Harness, Pro Series, Vortec, 4L60E, 5-pin MAF Sensor, LS1 O2 Sensors, EV6 Injectors, Truck Intake, Each
Part Number: WRS-WPVRTUVT4L60
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harness, Fuel Injection, Emission Harness, Multi-Port, Mass Airflow, Chevy, Pontiac, 5.7L, V8, Each
Part Number: PRF-60312
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection Systems Wiring Harnesses, Holley EFI, Universal Harness, Four Cylinder, EV14 Injectors, 205 lbs.-hr. with HP/Dominator EFI, Each
Part Number: HLY-558-440
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 Harnesses, Holley EFI, 6 Cylinder, MPFI, SFI, TBI, Injector Harness, for HP, Dominator EFI Systems, Universal, Each
Part Number: HLY-558-203
Not Yet Reviewed
Estimated Ship Date: Nov 3, 2026 if ordered today
Estimated Ship Date: Nov 3, 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: Tomorrow
Estimated Ship Date: Tomorrow
Fuel Injection Wiring Harness, Pro Series, T56, Chevy, Each
Part Number: WRS-PROLS3UNIT56
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Wiring Harness, EZ-EFI 2.0 Replacement, Throttle Body Injection Style, Universal, FAST, Each
Part Number: FST-30314
Not Yet Reviewed
Estimated Ship Date: Dec 21, 2026 if ordered today
Estimated Ship Date: Dec 21, 2026 if ordered today
Engine Injector Harness
Part Number: RNB-904-546
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Jetronic EV1 Injector Harness Extension 9" 8pcs
Part Number: ICB-WEINJ30X8-9
Not Yet Reviewed
Estimated Ship Date: Nov 2, 2026 if ordered today
Estimated Ship Date: Nov 2, 2026 if ordered today
2014+ GM GEN V LT L86/L83 WITH 6L80E STANDALONE WIRING HARNESS
Part Number: TSN-WH1221
Not Yet Reviewed
Estimated Ship Date: Dec 23, 2026 if ordered today
Estimated Ship Date: Dec 23, 2026 if ordered today
Wiring Harness, Fuel Injector, FAST XFI, Ford, Each
Part Number: FST-301203
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Wiring Harnesses, Holley EFI, Main Harness with Stock Coils, 7.3L Godzilla, Ford Each
Part Number: HLY-558-140
Not Yet Reviewed
Estimated Ship Date: Nov 3, 2026 if ordered today
Estimated Ship Date: Nov 3, 2026 if ordered today
Fuel pressure regulator harness, Bosch CP3 regulator, Duramax, Each
Part Number: FLE-S0398
Estimated Ship Date: Nov 25, 2026 if ordered today
Estimated Ship Date: Nov 25, 2026 if ordered today
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