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An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit comes complete with the main harness, power harness and in...

An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit for your GM LS engine comes complete with the main harness...

An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit comes complete with the main harness, power harness and in...

Main Harness for 99-04 2 & 4 Valve Ford Modular (4.6 & 5.4L) Engines for use with Holley Smart CoilsSpecs: Brand: Holley EFI Category: Ignition Emission Code: 4 Harness Application: Ford Harness Type: Main Part Type: Ignition Harness...

This wiring harness interfaces a Holley EFI ECU to a 2V Modular Ford engine. It is meant to be used in conjunction with an injector harness, a coil harness, and ignition modules. Most stock sensors are used with this harness.Features: 1999-2004 Fo...

Drive-By-Wire harness for 2011-2017 Ford Coyote (5.0L) enginesFeatures: 2011-2017 Ford Coyote (5.0L) engines (3) connectors Designed to be used with Ford Throttle Body P/N's - BR3Z-9E926-C, BR3E-9F991-AB, and FR3E-9F991-AA Designed to be used with...

Coil harness for 99-04 2 Valve Ford Modular (4.6 & 5.4L) Engines.Specs: Brand: Holley EFI Category: Ignition Emission Code: 4 Harness Application: Ford Harness Type: Ignition Part Type: Ignition Harness Product Type: Ford Modular Coil H...

Designed for use with Holley Sniper EFI fabricated intake manifolds to provide additional clearance for proper throttle body operation.Features: Required for use with Sniper EFI fabricated intake when using a stock throttle body and O-ring Fits st...

Designed for use with Holley Sniper EFI fabricated intake manifolds to provide additional clearance for proper throttle body operation.Features: Required for use with Sniper EFI fabricated intake when using a stock throttle body and O-ring Fits st...

Sniper's fabricated aluminum valve covers gives you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valv...

Sniper's fabricated aluminum valve covers gives you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valv...

Sniper's fabricated aluminum valve covers give you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valve...

Sniper's fabricated aluminum valve covers give you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valve...

Sniper's fabricated aluminum valve covers gives you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valv...

Sniper's fabricated aluminum valve covers gives you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valv...

Sniper's fabricated aluminum valve covers gives you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valv...

Sniper's fabricated aluminum valve covers gives you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valv...

Sniper's fabricated aluminum valve covers gives you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valv...

Sniper's fabricated aluminum valve covers gives you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valv...

Sniper's fabricated aluminum valve covers gives you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valv...

Sniper's fabricated aluminum valve covers gives you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valv...

Sniper's fabricated aluminum valve covers gives you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valv...

Sniper's fabricated aluminum valve covers gives you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valv...

Sniper's fabricated aluminum valve covers gives you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valv...