Engines Applciation:90CT‑400 &MERCRUISER STERNDRIVES4-3/4\" Gearcase90,100,115HP Command Thrust...2014 & Newer135 HP...1987-Newer150 HP...1978-Newer175 HP...1978-Newer200 HP 1978-Newer220 HP...1987‑1988225 HP 1980-Newer225 HP(SeaPro/Marathon)...All Years250 HP...1994-newer275 HP...1990-1994300 HP...1983&1999-newer3.4 Litre...1984-1986MERCRUISER STERNDRIVESMODELS 1S,1B,1C...-1982MODELS 120,140,145 DTS...-1982MODELS 165,228,470,485,888,898...-1982MODELS 120-260HP...1983-1985ALPHA ONE DRIVE (GEN.1&GEN.2 ALL MOTORS&HP)BRAVO ONE DRIVE (BRAVO ONE &BRAVO ONE X DRIVES ONLY)15 Spline Tooth
