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Upper Gear Kit 

Additional Details:

  • Ratio: 1.50:1
  • Fits: R, MR, Alpha One & SS (1983-1990)
  • Drive Gear: 22 teeth
  • Driven Gear: 20 teeth

Interchanges/Replaces

GLM

  • 11215

Mallory

  • 9-79202

Mercruiser Stern Drive

  • 43-803116T1
  • 43-803117T1

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-1142GLM
  • 21560
Mercruiser Stern Drive
  • 31-32573A1
1Upper Pinion Bearing N/A
18-1160GLM
  • 21520
Mallory
  • 9-75123
Mercruiser Stern Drive
  • 31-35988A12
  • 31-35988A2
1Drive Bearing Kit N/A
18-1165GLM
  • 21510
Mallory
  • 9-75117
Mercruiser Stern Drive
  • 31-61100A1
1Tapered Roller Bearing N/A
18-2201GLM
  • 11210
Mercruiser Stern Drive
  • 43-18410A2
  • 43-18411A2
  • 43-59832A2
  • 43-59832A4
1Upper Unit Gear Set N/A
18-2619-1GLM
  • 39620
Mallory
  • 9-62601
  • 9-62601-25
Mercruiser Stern Drive
  • 27-64818A2
  • 27-64818A3
  • 27-94996
  • 27-949962
  • 27-94996A1
  • 27-94996A2
  • 27-94996Q2
1Outdrive Gasket Set N/A
18-2648GLM
  • 87500
Mallory
  • 9-74303
Mercruiser Stern Drive
  • 26-32511A1
  • 26-32511B1
1Upper Unit Seal Kit N/A
18-2820Mercruiser Stern Drive
  • 27-45821
  • 27-64818
  • 27-64818A1
  • 27-64818A20
  • 27-64818A4
  • 27-64818Q4
1Outdrive Gasket N/A
MSRP: $717.75
Your Price: $547.99
You Save: 24% off MSRP!

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