Mercruiser, Alpha One, Bravo One 4 3/4" Gear Case
Thru-Hub Exhaust And 15 Tooth Spline
Models...
1A, 1B, 1C
120, 140, 145, DTS
165, 228, 470, 485, 888, 898
225S, 233, 255 TRS
260, 280 TRS, 330 TRS
120 - 190 HP Mercruiser ... 1983 - 1985
200 - 260 HP Mercruiser ... 1983 - 1985
2.5L - 5.7L Alpha One
6.2L MPI Alpha One
262, 350, 354 Magnum
320 EFI Alpha One
Diesel 2.8L - 7.3L
320 EFI, 350, 377 (Bravo One & Bravo One X Drives Only)
5.0L - 7.4L Bravo One (Bravo One & Bravo One X Drives Only)
Mercury, Mariner, Sea Ray 135 - 300 Horsepower (V6) 4 3/4" Gear Case
Thru-Hub Exhaust and 15 Tooth Spline
135 HP ... 1987 & Newer
150 HP ... 1978 & Newer
150 HP (Yamaha) ... 1979 - 1983
175 HP ... 1978 & Newer
175 HP (Yamaha) ... 1978 - 1979
200 HP ... 1978 & Newer
220 HP ... 1987 - 1988
225 HP ... 1980 & Newer
225 HP Sea Pro / Marathon ... All Years
250 HP ... 1994 & Newer
275 HP ... 1990 - 1994
300 HP ... 1983, 1999 & Newer
3.4 Liter ... 1984 - 1986
INCLUDES DFI, EFI, MAGNUM, OFFSHORE, OPTiMAX, SEA PRO XRI & VERADO