Holley EFI

Introducing carb hats from Holley EFI. These new carb hats are the perfect solution for any blow through installation. The Holley EFI carb hats contoured designed promotes optimal airflow, while...

Introducing J1A through J4 Connectors Kits so you no longer have to buy a complete connector kit if you only need one I/O connector

The new single plane EFI intake manifold is designed to provide a broad RPM powerband for high-performance street/strip engine applications to a maximum engine speed of 7500 RPM. The manifold is...

"Big Wire" Sub Harness- pre wired with 12ga power and grounds, for optimal performance! FeaturesBlack anodized finish with laser etched Holley EFI logo for long lasting good looksIncludes (4) -6AN...

15' long sealed USB data cable Features8mm Plug Wire Size Offers low 350 Ohms per foot resistance while maintaining very high noise suppressionAvailable in three colors (Red ,Black, and Grey)36"...

Single Plane EFI LS Intake Manifold. All GM LS Gen III or IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads.FeaturesSlim-style mounting requires very little dash space for...

J4 ECU Connector 26 User Programmable Inputs and OutputsFeaturesBase Plenum Top Mounting Flange Height – 8.42” to the lifter valley cover flange on engine block.Total Height with 92/102mm EFI...

This harness has been designed to interface with 58x crank and 4x cam sensors. These engines are commonly found in 2006+ Year Model vehicles with LS variants such as the: LS2,LS3,LS7,L76,L92, and L98...

These cast aluminum EFI intake elbows allow the use of GM LS throttle bodies on any intake manifold w/ the 4500 mounting flange. Our design incorporates an optimized transition from the throttle body...

If you already have your own wire and simply need the connectors and pins, we have you covered with our new ECU connector and pins kit, allowing you to fully terminate your own custom main...

Specifically designed for use in unlimited racing applications equipped with an external, dry timing-belt, cam drive system, where the bracket must be remote mounted to a front motor plate or some...

Holley's new 1000 CFM Throttle Body shares the same air entry area design that powers every NASCAR Sprint Cup Series™ car! The throttle body features integrated throttle position, idle air control...