Holley EFI

These two new MAP sensor adapters from Holley EFI allow you to quickly add a stainless steel MAP sensor to your existing installation. Holley part #558-466 adapts harnesses with a (MPFI) Weatherpack 3-pin connector to the 3-pin Delphi GT connector,...

Introducing the Holley EFI Wiring Shop. We have one goal, to provide you a one stop solution for all of your wiring components needs. From connectors and pins to wire loom and tools! We have everything you need to build or service your Holley EFI powered...

Wanting to run a drive by wire throttle body on your 4150 flanged intake manifold? Tired of stretching, adjusting, or breaking throttle cables? Look no further than the new Holley EFI Billet Aluminum Throttle Body Adapters. These two new adapters will...

Holley EFI Wiring Shop just keeps getting better! We have one goal, to provide you a one stop solution for all of your wiring components needs. From connectors and pins to wire loom and tools, we have everything you need to build or service your Holley...

High Current Nitrous Solenoid Driver for use with Holley EFIFeaturesDesigned for GM LS Gen III and IV engines equipped with GM LS3/L92 cylinder headsProvides best performance for forced induction (supercharged or turbocharged) engine applications with...

Chrysler has used two different coils on the HEMI engine series with 2006 being the year that the change was phased throughout the truck and car line. Fortunately the two coils are very different visually and makes for a simple review. If the coil...

The Holley VR Series billet fuel pressure regulators are part of the VR1 and VR2 Series brushless fuel systems product line. These regulators can support 3000+ horsepower engines that require high volumes of fuel flow. Both EFI and carbureted versions...

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 system...

Black Ceramic Coated, Single Plane EFI LS Intake Manifold. Fits all GM LS Gen III engines equipped with LS3/L92 style rectangular port cylinder headsFeaturesSmoothes and Minimizes TurbulenceIncreases Air FlowCreates More HorsepowerEasy InstallationMade...

Introducing 2x4 Terminator Stealth EFI upgrade components. The wait is over. These upgrade components allow you to use your current Terminator Stealth EFI throttle body, install a new main harness, and slave throttle body, and you are finished. This...

Universal Ford V8 Harness Kit for Holley HP and Dominator ECU'sFeatures40 ft of 3/8” Vapor Guard Fuel HoseDesigned for a return style fuel system.•Multi-layer rubber hose designed to withstand to the corrosive properties of modern fuels•Multi-fuel...

Holley EFI Universal "Cut-to-Fit" spark plug wire sets for GM Ls Engines come with the spark plug terminal and boot installed with the Coil end unterminated. Coil cap boots and terminals are included so you can cut the wire to the desired length, then...