9.9-25HP

3" Gearcase

9.9 & 15 HP Bigfoot 4-Strokes ...1999-2005

18 HP Mercury ...1980-1985

20 HP Mercury 2 Stroke ...1986-2002

20HP Mercury(Mariner 2-Stroke)...1985-newer

25 HP(Mariner 2-Stroke)... 1985-newer

25 HP (2-Stroke Mercury) ...1980 -2005

25 HP (Sea Pro/Marathon)...All Years

(Force)25 HP 3Cyl...1995-1998

10 Spline Tooth