# GLM11312 Gear Set Lower Unit Rebuild Kit with Bearings and Shims. Fits Mercruiser Sterndrive models: MR/ Alpha One 1984-1990 Alpha One SS 1986-1989 Alpha One Gen II 1991-1995 Drives. Fits Mercury Mariner Outboard models: 225 3.0 Carb 1.62:1 standard rotation (1994-1998) 225 3.0 Carb Sea Pro 1.62:1 standard rotation (1994-1998) It uses a forward gear bearing with a 3.500 Inch Outside Diameter. This kit contains the forward, reverse,and pinion gears, all bearings, and necessary shims. Replaces Mercury part #: 43-878087A4 Fits Applications (Click to View) Mercruiser Stern Drive Model Year HP Serial # Notes SSM II/III/IV/V 1994 ALL THRU NONE SSM II/III/IV/V 1982 ALL THRU NONE SSM II/III/IV/V 1983 ALL THRU NONE SSM II/III/IV/V 1984 ALL THRU NONE SSM II/III/IV/V 1993 ALL THRU NONE SSM II/III/IV/V 1992 ALL THRU NONE SSM II/III/IV/V 1989 ALL THRU NONE SSM II/III/IV/V 1990 ALL THRU NONE SSM II/III/IV/V 1991 ALL THRU NONE SSM II/III/IV/V 1995 ALL THRU NONE ALPHA ONE SS 1986 ALL THRU NONE ALPHA ONE GEN.II 1993 0D469859 THRU 0F679999 ALPHA ONE GEN.II 1994 0D469859 THRU 0F679999 ALPHA ONE GEN.II 1995 0D469859 THRU 0F679999 ALPHA ONE GEN.II 1992 0D469859 THRU 0F679999 ALPHA ONE GEN.II 1991 0D469859 THRU 0F679999 ALPHA ONE SS 1987 ALL THRU NONE ALPHA ONE SS 1988 ALL THRU NONE ALPHA ONE SS 1989 ALL THRU NONE SSM II/III/IV/V 1988 ALL THRU NONE SSM II/III/IV/V 1987 ALL THRU NONE R/MR/ALPHA ONE (TRANSOM ASSEMBLY) 1989 6216687 THRU 0D469858 R/MR/ALPHA ONE (TRANSOM ASSEMBLY) 1990 6216687 THRU 0D469858 R/MR/ALPHA ONE (TRANSOM ASSEMBLY) 1991 6216687 THRU 0D469858 R/MR/ALPHA ONE (STERNDRIVE) 1983 6225577 THRU 0D469858 R/MR/ALPHA ONE (TRANSOM ASSEMBLY) 1988 6216687 THRU 0D469858 R/MR/ALPHA ONE (TRANSOM ASSEMBLY) 1987 6216687 THRU 0D469858 R/MR/ALPHA ONE (TRANSOM ASSEMBLY) 1984 6216687 THRU 0D469858 R/MR/ALPHA ONE (TRANSOM ASSEMBLY) 1985 6216687 THRU 0D469858 R/MR/ALPHA ONE (TRANSOM ASSEMBLY) 1986 6216687 THRU 0D469858 R/MR/ALPHA ONE (STERNDRIVE) 1984 6225577 THRU 0D469858 R/MR/ALPHA ONE (STERNDRIVE) 1985 6225577 THRU 0D469858 R/MR/ALPHA ONE (STERNDRIVE) 1991 6225577 THRU 0D469858 SSM II/III/IV/V 1985 ALL THRU NONE SSM II/III/IV/V 1986 ALL THRU NONE R/MR/ALPHA ONE (STERNDRIVE) 1990 6225577 THRU 0D469858 R/MR/ALPHA ONE (STERNDRIVE) 1989 6225577 THRU 0D469858 R/MR/ALPHA ONE (STERNDRIVE) 1986 6225577 THRU 0D469858 R/MR/ALPHA ONE (STERNDRIVE) 1987 6225577 THRU 0D469858 R/MR/ALPHA ONE (STERNDRIVE) 1988 6225577 THRU 0D469858 R/MR/ALPHA ONE (TRANSOM ASSEMBLY) 1983 6216687 THRU 0D469858 Mercury Marine Model Year HP Serial # Notes 225 SEAPRO CARB 1994 225 0G245605 THRU 0G760299 225 MARATHON CARB 1998 225 0G245605 THRU 0G760299 225 SEAPRO CARB 1995 225 0G245605 THRU 0G760299 225 SEAPRO CARB 1996 225 0G245605 THRU 0G760299 225 SEAPRO CARB 1998 225 0G245605 THRU 0G760299 225 SEAPRO CARB 1997 225 0G245605 THRU 0G760299 225 MARATHON CARB 1997 225 0G245605 THRU 0G760299 225 MARATHON CARB 1996 225 0G245605 THRU 0G760299 225 (3.0L CARB) 1996 225 0D280813 THRU 0G760299 225 (3.0L CARB) 1995 225 0D280813 THRU 0G760299 225 (3.0L CARB) 1997 225 0D280813 THRU 0G760299 225 (3.0L CARB) 1998 225 0D280813 THRU 0G760299 225 MARATHON CARB 1995 225 0G245605 THRU 0G760299 225 MARATHON CARB 1994 225 0G245605 THRU 0G760299 225 (3.0L CARB) 1994 225 0D280813 THRU 0G760299 Brand HP Model Year Cylinders Serial Number Part Notes About Us Basic Power and its staff want you to feel 100% confident in your purchases. 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