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

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Mercruiser Alpha One tool *driven gear shimming

GLM Marine aftermarket driven gear shimming tool for the upper drive shaft housing

  • OEM number: 91-60526T GLM number: 90180
  • Driven gear shimming tool for the Mercruiser/Alpha 1/Alpha 1 Generation 2 stern drive
  • Measures the upper driven gear clearance in the upper drive shaft housing
  • See the upper gearcase drawing page for more components and parts

Exploded view Mercruiser drawings
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90180 drive gear shimming tool

90180 drive gear shimming tool

P/N 90180 Driven gear shimming tool $338.95