Fuel Injection System Wiring Harnesses

Wiring Harness, Fuel Injection, Multi-Port, Mass Airflow, Chevy, 4.8/5.3/6.0L, Kit

Part Number: PRF-60221

3.92 out of 5 stars ( 13 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Wiring Harnesses, Holley EFI, Replacement, LS Style, 58X/4X Main Harness, Speed Density, for HP, Dominator, EFI Systems Only, Chevy, 6.0-7.0L, Each

Part Number: HLY-558-103

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Wiring Harness, Fuel Injection, GM, MFI, Front Mount Fuse Block, Spade Fuse, 4L60E Trans, Universal, Kit

Part Number: PRF-60502

4.33 out of 5 stars ( 9 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Wiring Harnesses, Holley EFI, Replacement, LS1/6, 24X/1X Main Harness, Mass Airflow Metered, for HP, Dominator, EFI Systems Only, Chevy, 5.7L, Each

Part Number: HLY-558-102

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Wiring Harness, Fuel Injection System, Standalone, Drive-By-Cable, LS1, Kit

Part Number: TSN-WH1201

Not Yet Reviewed

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Wiring Harness, Fuel Injection, GM, SFI, LS1, Engine Swap, Front Mount Fuse Block, Standard Length, Universal

Part Number: PRF-60508

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Wiring Harness, Cummins Diesel, 5.9L, Facilitates Engine Transplants, Each

Part Number: PRF-60250

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Wiring Harnesses, Holley EFI, Universal, Unterminated, Main Harness, Multi-port Fuel Injection, for HP, Dominator, EFI Systems, with Connectors, Each

Part Number: HLY-558-105

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Fuel Injection System Wiring Harness, Holley EFI, Main Power, Universal, Speed Density/Throttle, 13 ft. Long, for Avenger, HP, Dominator EFI, Kit

Part Number: HLY-558-308

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/28/2025

Fuel Injection Systems Wiring Harnesses, Dominator EFI, J2A Auxiliary Harness, MPFI, Speed Density/Throttle Metered, with Wideband O2 Sensor, Kit

Part Number: HLY-558-401

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Wiring Harness, Holley EFI, V8 Over Manifold, Bosch Injector Harness, for Avenger, Dominator, HP EFI Systems, Chrysler, GM, Cylinder Orientation, Kit

Part Number: HLY-558-200

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Wiring Harness, Fuel Injection, GM, CFI/TBI, Engine Swap, Universal, Kit

Part Number: PRF-60101

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

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: Monday 4/28/2025

• Free Shipping

Wiring Harness, Fuel Injection, Mechanical Throttle Body, Chevy, Small Block, Each

Part Number: PRF-60617

Not Yet Reviewed

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

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

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Wiring Harness, Fuel Injection, GM, TPI, Engine Swap, Universal, Kit

Part Number: PRF-60102

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Fuel Injection Systems Wiring Harnesses, Dominator EFI, J2B Auxiliary Harness, 8 Additional Inputs, 23 Outputs, Connector Included, Kit

Part Number: HLY-558-402

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Wire Harnesses, Sniper EFI, Input/Output Harness, Throttle Body Injection, Speed Density Metered, 10-pin Male Connector, Kit

Part Number: SNE-558-491

Not Yet Reviewed

Estimated Ship Date: Monday 4/28/2025

Wire Harnesses, Sniper EFI, Main Harness, Throttle Body Injection, Speed Density Metered, 6 ft. Wire Loom, Black, Split Braided, Kit

Part Number: SNE-558-490

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Wiring Harnesses, Holley EFI, Replacement, Main Harness, Multi-port Fuel Injection, for HP, Dominator, EFI Systems, Universal, Each

Part Number: HLY-558-104

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Wiring Harness, Fuel Injection, GM, SFI, LT1/LT4 Engine Swap, Extra-Long Harness, Universal, Kit

Part Number: PRF-60505

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

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: Monday 4/28/2025

• Free Shipping

Wiring Harness, Fuel Injection System, Standalone, Drive-By-Cable, LS1, Kit

Part Number: TSN-WH1200

Not Yet Reviewed

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

Wiring Harness, Fuel Injection, GM, TPI, Engine Swap, Universal, Kit

Part Number: PRF-60103

Not Yet Reviewed

Estimated Ship Date: Monday 4/28/2025

• Free Shipping

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: May 13, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order