Engines Application:

25-70HP

3-1/4" Gearcase

25hp Bigfoot(4 stroke)...1999-2005

30hp Bigfoot(4 stroke)...2010-newer

30hp(2&4 stroke)...1994-2005

30hp(SeaPro/Marathon)...1994-newer

35hp...1984-1989

402&500 Models...1974-1984

40hp(2&4 stroke/not bigfoot)...1977-newer

40hp(Sea Pro/Marathon)...1977-newer

45hp...1986-1989

48hp(Mariner)...all years

50hp(2&4 stroke/not bigfoot)...1977-newer

55hp(Mercury/Sea Pro/Marathon)...1995-newer

60hp(4 stroke)(not bigfoot or Sea Pro/Marathon)...1978-newer

60hp(2 stroke)...1978-newer

70hp(Model 700)...1983

Force40/50hp...1995-1998

70hp...1991-1995

75hp...1996-1998

13 Spline Tooth