Autolite 4300 carburetor

Used by both Ford and AMC, it was produced as an emissions-compliant replacement for the previous Autolite 4100 model, and was superseded by the Motorcraft 4350.

Both the 4300A and 4300D have unique spread bore throttle plate designs (the 4300A being much less pronounced than the 4300D), which must mate to a correspondingly configured intake manifold.

[3] The 441 CFM 4300A was discontinued after the 1969 model year in favor of the two-barrel Autolite 2100 carburetor.

[1] By 1970, it was factory supplied on most Fords equipped with the 429 and 460, in addition to vehicles with the 351 Cleveland.

[3][4] This negative reputation is not universally accepted amongst users of these carburetors.