Fuel Injection System Wiring Harnesses

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: Today

• Free Shipping

Wiring Harnesses, Holley EFI, TFI Ignition, Adapter Harness, for Avenger, HP, Dominator EFI Systems, Each

Part Number: HLY-558-305

4.9 out of 5 stars ( 10 )

Estimated Ship Date: Today

• Free Shipping

Fuel Injection System Wiring Harnesses, Holley EFI, Auxiliary Input/Output Harness, Terminator EFI, Gains 4 Inputs/1 Output, Each

Part Number: HLY-558-420

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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: Oct 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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: 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

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

• Free Shipping

Wire Harnesses, Sniper 2 EFI, Input/Output Harness, Throttle Body Injection, Speed Density Metered, 6-pin Female Connector, Each

Part Number: SNE-558-497

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

Wiring Harnesses, Holley EFI, HEI Distributor, Adapter Harness, Small Cap, Computer Controlled, for Avenger, HP, Dominator EFI Systems, Each

Part Number: HLY-558-304

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Fuel Injection Systems Wiring Harnesses, Dominator EFI, J3 Auxiliary Harness, MPFI, Speed Density/Throttle, 17 Input/Outputs, Connector Included, Kit

Part Number: HLY-558-403

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

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: Oct 6, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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: Today

• Free Shipping

Fuel Injection System Wiring Harnesses, Holley EFI, Fuel Injector Harness, Unterminated, Bosch Style, for HP, Dominator EFI Systems, Universal, Each

Part Number: HLY-558-204

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

• Free Shipping

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: Today

• Free Shipping

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: Today

• Free Shipping

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

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

• Free Shipping

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: Today

Fuel Injection System Wiring Harnesses, Holley EFI, GM LS 58X Crank Sensor, Includes Power, EV6 Injector, Main Harnesses, for HP, Dominator ECUs, Kit

Part Number: HLY-558-501

Not Yet Reviewed

Estimated Ship Date: Oct 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Wiring Harnesses, Holley EFI, Benchtop Harness, Test Harness, EFI Input Connectors, Power Switch, for HP, Dominator, Terminator, Sniper ECUs, Each

Part Number: HLY-558-127

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

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: 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

• Free Shipping

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: Today

• Free Shipping

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: Today

• Free Shipping

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: Today

• Free Shipping

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

• Free Shipping

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

• Free Shipping