In automobile mechanics, the Quadrajet is a four barrel carburetor made by the Rochester Products Division of GM that was widely used in General Motors motor vehicles until 1990.

In 1988 fuel-injection replaced the four barrel carburetor.

The 2,000 cc engine used a two barrel carburetor where just one bore was bigger than that used on the Maverick.

It also had only two single barrel carburetors, one for each bank.

It used hydraulic lifters and a two barrel carburetor for most of its production, though four-barrel Carter Thermo-Quad and Rochester Quadrajet carburetors were used in police applications starting in 1978.

It was released in 1971 with a two barrel carburetor.

The 327, with two barrel carburetor only, was sold to Kaiser-Jeep from 1965 to 1967 for use in the Jeep Wagoneer SUV and Gladiator pick-up truck.

Weber pioneered the use of two-stage twin barrel carburetors, with two venturis of different sizes, the smaller one for low speed running and the larger one optimised for high speed use.

All used a single barrel carburetor.

An electronically fuel-injected 12-valve (four per cylinder) turbo was the range topper, whereas the normally aspirated base versions made do with a one barrel carburetor.