Holley EFI

These popular Holley EFI decals are top quality and stick easily to most surfaces. They're a great way to gain more business, get yours now!Features: Great way to show off your style High Quality Sticks easily to most surfaces Die cut Specs: Bran...

These popular Holley EFI decals are top quality and stick easily to most surfaces. They're a great way to gain more business, get yours now!Features: Great way to show off your style High Quality Sticks easily to most surfaces Die cut Specs: Bran...

These popular Holley EFI decals are top quality and stick easily to most surfaces. They're a great way to gain more business, get yours now!Features: Great way to show off your style High Quality Sticks easily to most surfaces Die Cut Specs: Bran...

These popular Holley EFI decals are top quality and stick easily to most surfaces. They're a great way to gain more business, get yours now!Features: Great way to show off your style High Quality Sticks easily to most surfaces Holley EFI logo Spec...

Holley's EFI Crank Trigger Kit is engineered to provide an accurate crank speed & position signal to Holley EFI systems in the most-demanding, high horsepower, racing applications. Crank position is measured every 10 degrees as opposed to ever...

Holley's EFI Crank Trigger Kit is engineered to provide an accurate crank speed & position signal to Holley EFI systems in the most-demanding, high horsepower, racing applications. Crank position is measured every 10 degrees as opposed to ever...

Holley's EFI Crank Trigger Kit is engineered to provide an accurate crank speed & position signal to Holley EFI systems in the most-demanding, high horsepower, racing applications. Crank position is measured every 10 degrees as opposed to ever...

These popular Holley EFI decals are top quality and stick easily to most surfaces. They're a great way to gain more business, get yours now!Features: Great way to show off your style High Quality Sticks easily to most surfaces Holley EFI logo Spec...

The CAN to USB communication cable provides the user with real tuning time access to the ECU. This cable can be used with Holley EFI, Sniper EFI, and Terminator X tuning software. Visit our Holley website under Support section to download updated ...

Our digital dash comes with an expansive list of features for the street driver, strip driver, and everything in between. With multiple gauges and indicator screens, you have many values and inputs to continuously monitor. For our touchscreen, we ...

Monitor the power of your Holley EFI system at a glance. Holley's new 6.86" Pro Dash delivers over 200 monitoring channels of reliable real-time data in a more compact, full HD package suitable for nearly any motorsports application. Be assured th...

Trust. Whether it's your engine builder, team members or EFI System, trust is earned, not given. When your expensive engine, sponsorship and reputation are on the line, trust your engine monitoring to the Holley EFI 12.3" Pro Dash.Monitor the powe...

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 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...

Ford V8 Injector Harness for Jetronic "Bosch" style Fuel Injectors (Evenly Spaced)Specs: Brand: Holley EFI Category: Air and Fuel Delivery Emission Code: 3 Harness Application: Ford Harness Type: Injector Part Type: Fuel Injection Harness P...

Ford V8 Injector Harness for Ford USCAR / EV6 style Fuel Injectors (Evenly Spaced)Specs: Brand: Holley EFI Category: Air and Fuel Delivery Emission Code: 3 Harness Application: Ford Harness Type: Injector Part Type: Fuel Injection Harness P...

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...

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...

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...

This cast EFI intake elbow allows the use of Ford throttle bodies on any intake manifold w/ the 4150 mounting flange. Slotted mounting holes & dual throttle cable mounting bracket bosses allow the elbow & throttle body to be mounted forwa...

This cast EFI intake elbow allows the use of GM LS throttle bodies on any intake manifold w/ the 4150 mounting flange. Slotted mounting holes & dual throttle cable mounting bracket bosses allow the elbow & throttle body to be mounted forw...

This cast EFI intake elbow allows the use of Ford throttle bodies on any intake manifold w/ the 4150 mounting flange. Slotted mounting holes & dual throttle cable mounting bracket bosses allow the elbow & throttle body to be mounted forwa...