Holley EFI

HI-RAM 95MM Plenum Top for EFI Hi-Ram Manifolds- Bolt down through design. Black finish.FeaturesReplacement throttle body for Stealth EFI Kit

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...

This kit contains one high flow solenoid for service replacement in the field.FeaturesCarburetor looks with the drivability of EFITrouble-free performance with today’s fuels - put an end to vapor...

Introducing the newest development from the Holley EFI engineering team. The Holley EFI High Flow Dual Port Boost Control Kit. This kit contains a set of pre-installed high flow solenoids, which...

HP Multi-Port EFI systems for small or big block Chevys are ready for the street or strip with the simple swap of an intake! Whether you have a stock engine, crate or custom-built engine, HP...

Looking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness...

Looking for a plug and play kit for your GM LS engine? The HP ECU allows you to accurately control the fuel and ignition of your engine plus much more. Got a stock LS engine? Simply download a base...

Do you have a Mopar, Ford or other type engine you want to install multi-port fuel injection on? No, problem, the Holley HP universal retrofit EFI kits are designed to be used with any V-8 intake...

HP Smart Coil ignition sub-harness. Includes a pair of coil harnesses for an 8 cylinder engine. These harnesses are similar in design to factory GM LSx coil harnesses, but plug into Holley HP Smart...

Designed to plug and play with HyperSpark distributors and Holley EFI main harnesses with an ignition connector, such as part number 558-104.FeaturesBlack Anodized Billet Dual Port ManifoldTwo 1/4”...

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...