These are customer returned boosters in good operational condition. They come with a 6 month warranty. These boosters work on nearly all 1968-76 half ton, F250, and F350 trucks. They do not work on cantilever applications with a flat bar connecting to the pedal. They don't work on 1979 trucks with the offset eyelet input rod either. Nor do they work on 1967 trucks with shorter input rods. 

Returns not accepted for this