Alpha One & Gen 2 Outdrive Parts *Drawings *Videos

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Mercruiser Alpha 1 tool *Drive shaft adaptor

GLM Marine aftermarket parts drive shaft adaptor
for lower unit

  • OEM number: 91-56775T
  • GLM Marine number: 90220
  • Drive shaft adaptor (also included with #90210 pinion nut adaptor kit)
  • Provides a wrench surface to turn the drive shaft on the Mercruiser/Alpha 1/Alpha 1 Generation 2 stern drives
  • Mercruiser tech drawings by part number or description here

90220 drive shaft adaptor

90220 drive shaft adaptor

P/N 90220 Drive shaft adaptor $39.99

Customers who ordered P/N 90095 also purchased:


GLM 12120 Water pump

P/N 12120 Outdrive lower gear case water pump impeller kit. For Alpha One 1984-1990 models. Replaces Sierra 18-3320. $42.99

90095 Bearing carrier puller in the lower unit

90095 Bearing carrier puller in the lower unit

P/N 90095 Prop and bearing carrier puller $82.95

90110 Tool
90110 Tool

Shift cable tool GLM aftermarket
P/N 90110 or OEM 91-12037 Used to remove and install shift cable on outdrive gimbal housings