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

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Alpha One upper gearcase yoke shaft lock nut

Stern drive lock nut for upper gearcase

  • P/N 28360 Locknut OEM 11-22339
  • Lock nut for upper gearcase
  • Installs on to outdrive yoke shaft P/N 28310 OEM 46020-1
  • Fits MC-1, R, MR Alpha one and Alpha one generation 2

Exploded view Mercruiser drawings
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28360 pinion nut

28360 Mercruiser gear nut

P/N 28360 Lock nut OEM 11-22339 $4.29

Locknut fit GLM yoke shafts with part numbers 28310 and 28312. Fits MC-1, R, MR Alpha one and Alpha one generation 2. Note a new nut should be used each time the seal get change.