Holley

Holley Sniper EFI Fabricated Manifolds continues to push the aftermarket by introducing our latest Race Series line of intakes for GM LS 1/2/6 and ...

The eight channel coil driver module is a "dumb coil" driver module that plugs into the main harness, which is needed when running the factory coil...

Do you need precision control over your ignition system? Would your combination benefit from Individual Cylinder Timing Control? Are you experienci...

554-128 is a device that allows for an ECU input to be safely connected directly to the +12V side of the transbrake solenoid. This device protects ...

Sniper EFI's new 92mm and 102mm billet aluminum LS throttle bodies give you a great way to improve engine performance without breaking the bank. Do...

The unterminated main harness comes with both J1A and J1B connectors full terminated with 15' of flying lead wiring. Features: 15’ long flying l...

Introducing EFI Engine Connector Kits – From Holley EFI. With the latest addition to our ever-expanding Wiring Shop, our goal was to provide you wi...

Ford V8 Injector Harness for Ford USCAR / EV6 style Fuel Injectors (Evenly Spaced)

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...

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...

This wiring harness interfaces a Holley EFI ECU to a 4V Ford Modular engine. It is meant to be used in conjunction with an injector harness, a coil...

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...

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...

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...

Looking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C9...

The Holley EFI CAN Input/Output Module can be added to Holley EFI HP, Dominator, Terminator X and Terminator X Max EFI installation. This CAN modul...

Looking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C9...

The Holley EFI CAN Input/Output Module can be added to Holley EFI HP, Dominator, Terminator X and Terminator X Max EFI installation. This CAN modul...

Introducing the Holley EFI Programmable 8 Channel Injector Driver Module. The ultimate solution for methanol burning engines that require a large s...

Getting a high powered drag car to hook is the key to low elapsed times and win lights. Whether small tire radial car or a full out Pro-Mod, all ra...

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...

Introducing the Holley EFI 8 Channel CANBus EGT Kit. Exhaust Gas Temperature data is critical information when your engine tune up is on the ragged...

j2A, j2B, j3, j4 Connector & Pin Kit - Contains connectors & pins, but no wiring. for Dominator EFI

Introducing the Holley EFI 2 Axis G-Meter. Designed to be stable in the harshest environment. Co-Designed with RACEPAK, this G-meter would be a per...