Holley

Holley: Over 120 Years of American Performance

Holley Performance Products is one of the most storied names in the automotive aftermarket. Founded in 1896 by brothers George and Earl Holley in Bradford, Pennsylvania, the company pivoted to carburetor manufacturing in 1903 at the suggestion of Henry Ford himself — a decision that would define an industry. From feeding Henry Ford's earliest production vehicles to powering championship-winning race cars, Holley has spent more than a century earning its place under the hood of America's most iconic machines.

Today, Holley is headquartered in Bowling Green, Kentucky, and has grown into a broad performance conglomerate. Its portfolio of owned brands includes household names like MSD Ignition, Flowmaster exhaust, NOS Nitrous Oxide Systems, Hooker Headers, Hurst Shifters, Weiand, Earl's Performance Plumbing, and many others — making it one of the largest performance parts ecosystems in the world.

A Legacy Built on Fuel System Excellence

Holley's heritage begins with the carburetor, and that legacy remains unmatched. With over 250 million carburetors manufactured across more than a century, Holley's carbs have fueled everything from early Model T Fords to the most fearsome muscle cars of the 1960s and the quickest drag racers of today. Whether you're rebuilding a classic or building a street/strip monster, a Holley carburetor is often the first name that comes to mind.

The fuel system expertise doesn't stop at the carb. Holley manufactures a comprehensive range of electric fuel pumps — from the iconic Mighty Mite for mild carbureted street applications all the way up to the high-output Dominator in-line billet pumps capable of supporting over 1,800 carbureted horsepower. Pair any of those pumps with a Holley fuel pressure regulator, and you have a fully integrated fuel delivery system engineered to work together from the start. Holley offers both deadhead and bypass-style regulators in die-cast and billet aluminum, covering carbureted and EFI applications alike.

Engine Dress-Up With a Performance Pedigree

Beyond fuel systems, Holley has become a go-to source for engine dress-up components that look as good as they perform. Their lineup of engine valve covers and engine valve cover sets spans cast aluminum and fabricated aluminum designs for popular platforms including GM LS engines and Small Block Chevy applications. Finished in satin black, gloss red, polished, or factory orange, these covers bring a purposeful, custom appearance to any engine bay without sacrificing fit or function.

Built for Builders

What sets Holley apart from the competition is the depth of its ecosystem. A builder can source a carburetor, an electric fuel pump, a matched fuel pressure regulator, and valve covers — all from Holley — knowing each component was engineered with the others in mind. That integration, backed by decades of motorsport development and OEM partnerships, is why Holley remains a benchmark brand for enthusiasts building everything from restorations to full-on race machines.