OMC Cobra bearings (Upper gearcase)

OMC bearings sold as sets with outside race and inside cone
Driven gear and front carrier
Timken is the OEM MFG of the tapered list bellow
Outdrive years 1986-1987-1988-1989-1990-1991-1992-1993
Note Timken bearings require a per load pressure of 36 to 48 inch pounds with out oil seal installed. 2 seal with a small amount of oil added would add about 24 to 36 inch pounds. This works out to 5 to 8 foot pounds total for Cobra drive shaft
Cobra bearing shimming videos
Require plastic or metal shims
Exploded view OMC drawings

27920	P/N 27920 OEM 911683 Front carrier $112.99
21542 Bearing	P/N 21542 OEM 983877 Rear Years 1986 to 1993 $79.89
21540	P/N 21540 OEM 983891 Upper driven bearing years 1986 to 1993 $39.89
21541	P/N 21541 OEM 983892 Lower driven gear bearing $43.89
21543	P/N 21543 OEM 983878 Bearing years: 1986-1987-1988-1989-1990-1991-1992-1993 $51.89