Alpha 1 & Gen. 2 Outdrive Parts *Drawings *Videos

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Alpha One Bearing *Upper cover O.D. 1 - 25/32"

GLM Marine aftermarket parts upper cover bearing assembly P/N 21511 for the stern drive shaft housing

  • Upper cover Timken tapered roller bearing assembly for the Alpha 1 stern drive
  • O.D. (1-25/32")
  • Timken inner cone LM11949
  • Timken outer race LM11910
  • Replacement aftermarket bearing
  • OEM 31-32575T1
  • See our tapered roller bearings page for the(O.D. 15/16") upper cover bearing and other upper gearcase Timken bearings

Tech support exploded view Alpha One drawings
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21511 Alpha 1 bearing cover 1-25/32

21511 Alpha 1 bearing cover 1-25/32

P/N 21511 OEM 31-32575T1 $17.29