3-1/4" gearcase 13 tooth spline

Force/Chrysler/USMarine
40hp.....................1995-1998
50hp.....................1995-1998
70hp.....................1991-1995
75hp.....................1996-1998
Mercury/Mariner
25hp 4-T/BF.........1999-2005
30hp 2-T...............1994-2002
30hp 4-T...............1999-2005
30hp Sea Pro/Marathon
35hp.....................1984-1989
40hp (402)............1974-1976
40hp.....................1977->
40hp 4-T...............1997->
40hp Sea Pro/Marathon
45hp.....................1986-1989
48hp.....................ALL
50hp (500)............1974-1976
50hp 2-T...............1977->
50hp 4-T...............1995->
55hp Sea Pro/Marathon
60hp.....................1976
60hp 2-T...............1978->
60hp 4-T...............2001->
65hp (650)............1972-1976
60hp (700)............1972-1976
70hp.....................1976-83