Mercruiser Outdrive Parts Drawings *How to Videos
Mercruiser reverse gear shims *Lower unit part
GLM Marine aftermarket shim for reverse gear lower unit
GLM marine # 23290 OEM # 15-97166Shim out or spacer for reverse gearTech support Exploded view drawings search by part number or description hereMercruiser #1 and MR model only
P/N 23290 shim $4.95
Use only on Mercruiser #1 and MR model outdrives between thrust washer and gear housing.
Customers who bought P/N 23290 also purchased:
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
P/N GLM 87510 lower unit seal kit $42.95 M1 / R / MR / Alpha 1 years 1964 to 1990 Serial numbers 1684188 - OD469858
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