Mercruiser Outdrive Parts Drawings *How to Videos

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Mercruiser reverse gear shims *Lower unit part

GLM Marine aftermarket shim for reverse gear lower unit

  • GLM marine # 23290
  • OEM # 15-97166
  • Shim out or spacer for reverse gear
  • Mercruiser #1 and MR model only

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23290 shim

23290 shim

P/N 23290 shim $4.29

Use only on Mercruiser #1 and MR model outdrives between thrust washer and gear housing.

Customers who bought P/N 23290 also purchased:

21450 Mercruiser kit OEM 865436A03

21450 OEM 865436A03

P/N 21450 Complete outdrive shift cable kit with outdrive mounting gasket for bell housing. Click on picture for list of included parts. OEM 865436A03. $71.95

87510 lower seal kit

87510 lower seal kit

P/N GLM 87510 lower unit seal kit $38.95 M1 / R / MR / Alpha 1 years 1964 to 1990 Serial numbers 1684188 - OD469858