Includes all seals, o'rings and bearings for the gearcase. Johnson / Evinrude outboard 1978 - 1998 4.250" Diameter gearcase with four bolt bearing carrier 88-140 HP OMC Sterndrive 1982-1985 Most four cylinder (4.250" diameter gearcase) Mechanical shift only (not hydro-shift) OMC Cobra 1986 - 1990