Holley EFI

Universal MPFI Main Harness for HP EFI & Dominator EFIFeaturesCANBus Connector WiringUSB Connector Wiring

The Holley EFI die cast aluminum four barrel throttle body is designed to fit on any square bore (4150 style) intake manifold. This new MPFI Race Throttle Body shares the same air entry area design...

Universal Unterminated Ignition Harness for HP EFI & Dominator EFIFeaturesBolt on 4150 Flange Carburetor ReplacementContains 8, 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally...

Universal Unterminated Injector Harness for HP EFI & Dominator EFI(Bosch EV1 style).FeaturesBosch/EV1 style performance injector - IndividualHigh impedance for use with saturated driversRated...

An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit comes...

The unterminated main harness comes with both J1A and J1B connectors full terminated with 15' of flying lead wiring.FeaturesBosch/EV1 style performance injectors - Set of 8High impedance for use with...

Unterminated 16 injectors MPFI harness Terminated at injector connectors (Bosch style). Harness must be assembled and require crimping Metripak150 connectors. Includes all connectors, pins,...

Unterminated 24 injector MPFI harness Terminated at injector connectors (Bosch style). Harness must be assembled and require crimping Metripak 150 connectors. Includes all connectors, pins,...

FeaturesBuilt in Relay - Must be wired to a switched 12v source.Plug and play with 2009+ GM 4L60E Transmissions

Unterminated Vehicle Harness For Digital DashFeatures8mm Plug Wire SizeOffers low 350 Ohms per foot resistance while maintaining very high noise suppressionAvailable in three colors (Red ,Black, and...

V8 over Manifold, Bosch Style Connector Harness for Avenger EFI, HP EFI & Dominator EFIFeaturesBosch/EV1 style performance injector- IndividualLow impedance (2.0 Ohms) for use with peak and hold...

The Holley EFI Vacuum Manifold kit is designed for those of you wanting a simple and clean solution for plumbing either vacuum or boost referenced sources. This manifold block features 12 1/8th NPT...