Holley Performance Parts – EFI, Intakes, & More

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...

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 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...

Complete connector and pin kit for use with Holley EFI Stealth Ram Power Pack kit.

Required when upgrading to (EV1/Bosch style) performance Injectors on LS2, LS3, or L99 applications (not required to upgrade LS1 and LS6 applications).

Required when directly connecting Holley fuel rails to GM factory fuel line quick?????connect. Includes (1) 3/4?????16 O?????ring port plug and (1) ?????6 to GM quick connect adapter.

Note if this product is to be used with aftermarket (tall) EV1 performance injectors: LS2, LS3, and L99 applications will require taller brackets and Adapter O-rings to be used with EV1 injectors...

Note: If this product is to be used with aftermarket (tall) EV1 performance injectors: LS2, LS3, and L99 applications will require taller brackets and Adapter O-rings to be used with EV1 injectors...

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Holley's popular cast aluminum oil pan (P/N 302Ð2) designed to retroÐfit LS engines into trucks, muscle cars, and more, has just been brought to the next level. Vehicles that endure prolonged...

Holley's popular cast aluminum oil pan (P/N 302?????1) designed to retro?????fit LS engines into trucks, muscle cars, and more, has just been brought to the next level. Vehicles that endure...

Intake Manifold Choke Block?????Off Pad For Some Chevy SB Engine Intake Manifolds

Holley LS Hi?????Ram Fuel Rail Adapter Kit is designed for use with the Holley Hi?????Ram line of LS intake manifolds. The Adapter kit is designed to allow for proper mounting of the fuel rail when...