OMC Parts / Cobra Sterndrive Drawings+Video

Cobra upper gearcase OMC bearings

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OMC Cobra bearings for sterndrives 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 presure 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 lbs total for Cobra drive shaft
  • Cobra bearing shimming videos
  • Require plastic or metal shims

OMC Cobra bearings for upper gear case

27920
27920

# 27920 OEM# 911683
Front carrier

21542 Bearing
21542 Bearing

# 21543 $00.00 OEM 983878
Rear Years 1986 thru 1993

21540 Outdrive bearing
21540 Outdrive bearing

# 21540 $00.00 OEM# 983891
Upper driven bearing years 1986 thru 1993

21541 Bearing
21541 Bearing

# 21541 $00.00 OEM# 983892
Lower driven gear bearing

21543
21543

# 21543 $00.00 OEM# 983878
Rear bearing years:
1986-1987-1988-1989-1990-1991-1992-1993

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* 21 Canadian road unit 17* Toronto Ontario * Canada * M1R-5G2