The front output shaft yoke seal is very, very expensive. The seal is made with two metal sleeves, an inner and outer. They must be pressed in place at the same time. The inner sleeve presses on the shaft and outer sleeve into the bore in the housing. This installer makes it a snap. At fifty bucks a piece for the seals, you only want to do it once.
2949 Promenade St #100
West Sacramento CA 95691
916 372 6001