Remanufactured TH400 4" gasket style short tail large yoke extension housing. This component is thoroughly cleaned and inspected. Mount bolt holes are "chased" to verify thread integrity, and fit with new mounting bolts. Assembly is completed with the installation of a new extension housing bushing and extension housing seal. Fits all year Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac TH400 transmissions with 4" extension housing and large diameter yoke.