Holley Performance Parts – EFI, Intakes, & More

Holley ECU Mounting Brackets Holley ECU mounting brackets allow you to comfortably install either the Dominator ECU, Holley HP, Terminator X, or Terminator X-MAX under your Mustang's front passenger...

This harness connects the main Holley harness to the injectors. For EV1 style injectors.

This harness has extra length over the standard Ford harness and is long enough to be installed under the passenger seat on cars such as Fox Mustangs.This harness is for fuel injected small block...

These standalone Terminator X ECU's (Electronic Control Unit) are intended to be used as service components for your Terminator X EFI installation. The Terminator X ECU features real-time fuel learn,...

Do you need to upgrade your ignition system due to a recent Sniper EFI installation, but have no idea which option is best? Introducing HyperSpark Ignition, from Sniper EFI. The complete system...

Introducing the next generation of Holley EFI Dual Sync Distributors, the new design features an improved shutter wheel, high-quality dual Hall Effect sensors, and an MSD cap and rotor! While these...

The 558-456 wiring kit is intended to fully populate all of the inputs and outputs for PNs 553-111 and 553-112 Pro Dashes. These can easily be inserted into the existing 34 pin dash connector. It...

The Holley EFI Can Adapter/Power Harness adapts two pin Holley main harness CAN connectors to new style 4 pin CAN devices.

Designed to plug and play with HyperSpark distributors and Holley EFI main harnesses with an ignition connector, such as part number 558-104. Features: Used to run a "timed sequential" fuel...

Do you need to upgrade your ignition system due to a recent Sniper EFI installation, but have no idea which option is best? Introducing HyperSpark Ignition, from Sniper EFI. The complete system...

Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. Features: Anti-Seize pre-applied to sensor threads. Service Oxygen Sensor for Sniper EFI Systems Service Oxygen...

Have you been searching for a reason to discard your old noisy mechanical speedometer cable? If so, the Holley GPS Module for our 7" Digital displays should be the next addition to your project...

Designed to eliminate jittery tach signals when using points/tach pin B5 to provide RPM to the 7" Standalone Digital Dash

Dash bezels that are designed to work with the Holley dashes. The bezels are made from a 5/32" thick UV-resistant ABS composite material. Structurally, these bezels are are as strong, or stronger...

The black universal mount dash bezel for the Holley 6.86 inch pro dash is made of UV resistant composite for durability. The overall dimensions are 12 x 21 inches to allow you to trim to fit your...