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Introducing the Holley EFI Wiring Shop. We have one goal, to provide you a one stop solution for all of your wiring components needs. From connectors and pins to wire loom and tools! We have everything you need to build or service your Holley EFI ...

Main harness for 99-04 2 & 4 Valve Ford Modular (4.6 & 5.4L) Engines.Specs: Brand: Holley EFI Category: Air and Fuel Delivery Emission Code: 4 Harness Application: Ford Harness Type: Main Part Type: Fuel Injection Harness Product Ty...

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...

Coil harness for 99-04 4 Valve Ford Modular (4.6 and 5.4L) engines.Specs: Brand: Holley EFI Category: Air and Fuel Delivery Emission Code: 4 Grade Type: Performance Harness Application: Ford Harness Type: Ignition Tech Resources:

The new Hi-Flow billet fuel rails are a direct fit for the Ford 7.3L Godzilla engines. The fuel rails feature a 5/8" diameter fuel passage that provides more flow capacity for higher horsepower applications versus stock rails. The black anodized r...

The Terminator X offers an advanced engine management solution specifically tailored for the formidable 7.3-liter Godzilla engine. Designed to unlock the full potential of these powerhouse engines, the Terminator X provides unparalleled control ov...

The Terminator X offers an advanced engine management solution specifically tailored for the formidable 7.3-liter Godzilla engine. Designed to unlock the full potential of these powerhouse engines, the Terminator X provides unparalleled control ov...

Coil Harness for 2011 to 2015 Ford Coyote (5.0L) EnginesSpecs: Brand: Holley EFI Category: Ignition Emission Code: 4 Harness Application: Ford Harness Type: Ignition Part Type: Ignition Harness Product Type: Ford Modular Coil Harness Sub C...

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...

These manifolds are designed for 2011-2023 Ford 5.0L high performance engines with cylinder heads that have an OEM type mounting pattern and port dimensions. These kits include fuel rails for use with OEM type fuel injectors and will not accept mo...

Introducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your weekend road race warrior powered by a coyote junkyard engine with locked cams? Unlock the full pot...

Introducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your weekend road race warrior powered by a coyote junkyard engine with locked cams? Unlock the full pot...

Introducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your weekend road race warrior powered by a coyote junkyard engine with locked cams? Unlock the full pot...

Introducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your weekend road race warrior powered by a coyote junkyard engine with locked cams? Unlock the full pot...

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...

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 harness provides a plug and play upgrade solution for those seeking to convert to Coil-On-Plug. Additionally we have pre-installed a Power Tap for easy access to 12v, 5v Reference, and Sensor Grounds. The Ford MPFI C-O-P Main Harness has also...

Cover unused connectors on your 6.7L PowerstrokeThese harness caps are intended for connectors left unused after the relevant exhaust or EGR modifications. They provide a fitted barrier against water and debris at the unused connection points. The...

Ford TFI Ignition Adapter HarnessSpecs: Brand: Holley EFI Category: Ignition Emission Code: 3 Harness Application: Ford Harness Type: Ignition Part Type: Ignition Harness Product Type: Ignition Harnesses Sub Category: Ignition Wire and Rel...

Ford V8 Injector Harness for HP EFI & Dominator EFISpecs: Brand: Holley EFI Category: Air and Fuel Delivery Emission Code: 3 Harness Application: Ford Harness Type: Injector Part Type: Fuel Injection Harness Product Type: Ford EV1 Style...