Holley Performance

Designed for benchtop testing and setup of HP, Dominator, Terminator X, Terminator X Max, and Sniper ECU's, as well as 7" dashes.Great for ECU diagnostics, firmware updating, or pre-configuring dash layouts without being in the vehicle.Harness has...

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

Dash bezels that are designed to work with the Racepak dashes. The bezels are made from a 5/32" thick UV-resistant ABS composite material. Structurally, these bezels are are as strong, or stronger than the OEM panels. The bezels come in a matte bl...

Dash bezels that are designed to work with the Racepak dashes. The bezels are made from a 5/32" thick UV-resistant ABS composite material. Structurally, these bezels are are as strong, or stronger than the OEM panels. The bezels come in a matte bl...

The new Hi-Flow billet fuel rails are a direct fit for all late model, 2011 and newer naturally aspirated Coyote engines (5.0 and 5.2) including Cobra Jet and Boss 302. This also includes the 2018 and newer direct injection engines. The fuel rails...

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...

Sniper's fabricated aluminum valve covers gives you an excellent way to add a high-end fabricated look without the high-end price. They offer you a lightweight and tough valve cover for your favorite street, off-road, or racing machine. These valv...

The Holley GM Gen V LT Ultra Lo-Ram intake manifold kits are designed for GM Gen V LT engines equipped with GM LT cylinder heads. These intake manifolds will work with OE or aftermarket cylinder heads. The Ultra Lo-Ram intake manifolds are designe...

Tremec TKX - TKO Transmission Harness - Terminated for VSS - Reverse Lockout and Reverse LightsSpecs: Brand: Holley EFI Category: Transmission Connector Quantity: 4 Emission Code: 3 Grade Type: Performance Harness Application: GM Harness Ty...

T-56 Magnum Transmission Harness - Terminated for VSS, Reverse Lockout, and Reverse Lights.Specs: Brand: Holley EFI Category: Transmission Connector Quantity: 4 Emission Code: 3 Harness Application: GM Harness Type: Transmission Part Type: ...

F-Body T-56 Transmission Harness - Terminated for VSS - Reverse Lockout and Reverse LightsSpecs: Brand: Holley EFI Category: Transmission Connector Quantity: 4 Emission Code: 3 Grade Type: Performance Harness Application: GM Harness Type: T...

Used when adding a second wide band oxygen sensor to a Dominator EFI installation.Features: J2A Connector #2 Wide band oxygen sensor harness (Fully Terminated) 23 user programmable input wires with pre-crimped ECU pins Specs: Brand: Holley EFI C...

Our fuel rail kit allows dual -8AN feeds to keep up with fueling demands with fuels like E85, E98, M1, and the like.This kit will also allow you to run both rails to a single high-flow fuel pressure regulator for complete control over your fuel sy...

Holley EFI universal bypass fuel pressure regulators are for use with fuel systems in street or track applications. They feature adjustable base pressure from 15-90 psi, a gauge port, and a boost reference port as well. The regulators are ideal fo...

The heart of a fuel system begins with the fuel tank. When building a fuel system, swapping a carb or converting to EFI, it is crucial that you do not contaminate your new parts with dirt, rust, and sludge from an old fuel tank. We offer a simple...

The heart of a fuel system begins with the fuel tank. When building a fuel system, swapping a carb or converting to EFI, it is crucial that you do not contaminate your new parts with dirt, rust, and sludge from an old fuel tank. We offer a simple...

The heart of a fuel system begins with the fuel tank. When building a fuel system, swapping a carb or converting to EFI, it is crucial that you do not contaminate your new parts with dirt, rust, and sludge from an old fuel tank. We offer a simple...

The heart of a fuel system begins with the fuel tank. When building a fuel system, swapping a carb or converting to EFI, it is crucial that you do not contaminate your new parts with dirt, rust, and sludge from an old fuel tank. We offer a simple...

The best crimping tool available for making custom wiring harnesses. Constructed with a heavy-duty hardened steel frame with molded non-slip hand grips.Features: Dual-molding grips for ergonomic comfort Ratchet assembly assures a perfect crimp eve...