In automobile mechanics, the Quarajet is a 4 barrel carburetor made by the Rochester Products Division of GM that was widely used in General Motors motor vehicles until 1990. Its last application was on the Oldsmobile 307 V8 engine, which was last used in the Cadillac Brougham and full size station wagons made by Chevrolet, Pontiac, Oldsmobile, and Buick.