Holley EFI

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...

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...

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...

When converting your fuel system to a return style EFI setup, the biggest challenge can be plumbing the fuel lines. Holley continues to be the leader in fuel system development to make your life...

When converting your fuel system to a return style EFI setup, the biggest challenge can be plumbing the fuel lines. Holley continues to be the leader in fuel system development to make your life...

Main harness for 99-04 2 & 4 Valve Ford Modular (4.6 & 5.4L) Engines.FeaturesBuilt in C-O-P HarnessAdditional 40 amp relay to power individual coilsPre-Terminated for Ford PWM IAC20awq gauge wire or...

Coil harness for 99-04 2 Valve Ford Modular (4.6 & 5.4L) Engines. FeaturesBolt on 2x4 4150 Flange Carburetor ReplacementSupports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with...

Ford 4R70W/4R75W Transmission Harness - Complete terminated harness with j4 connector to operate 1998+ Ford electronic transmissions, for Dominator EFI and Terminator X Max only!Features4150 Flange...

Coil harness for 99-04 4 Valve Ford Modular (4.6 & 5.4L) Engines. FeaturesBlank cap available for Coil-On-Plug applications

Spring and bracket kit needed when using a Ford automatic transmission with a Terminator EFI kit. FeaturesTerminator X Stealth 4150 Kits for either 24x or 58x LS enginesSupports up to 650HP with Four...

Drive-By-Wire harness for 2011-2017 Ford Coyote (5.0L) enginesFeaturesAdd Even More Power to the Gen III Hemi Engine with a Holley Hi-Ram Intake ManifoldFits Gen III Hemi Engines w/ Large Intake...

Coil Harness for 2011 to 2015 Ford Coyote (5.0L) EnginesFeaturesBlack ceramic coating provides an aggressive look to your engine compartment2500-7000 RPM power band4150 Square bore flangeOptimized...