phone: 270-618-5200


The diagram to the right is for a Mercruiser Alpha I Gen I Sterndrive Upper Drive for models from 1984-1990. The following parts correspond to the numbers on this diagram:



  1. Bearing Kit
  2. Lower Roller Bearing
  3. Upper Roller Bearing
  4. Upper Gear Set
  5. Vent Screw & Gasket
  6. Upper Bearing Shim Kit
  7. Drive Shaft
  8. Upper Retainer
  9. U-Joint
  10. Long Input Yoke
  11. Drive Shaft Yoke
  12. Center Socket

We also offer the following item:

Didn't find the Sterndrive Part you needed?  We have many additional parts in our warehouse.  Please contact us directly to let us do a custom search for the part you need. 

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