Sierra 18-2204 Gear Set Replaces 43-75325A3 - MW
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Sierra 18-2204 Mercruiser 1.84:1 Upper Unit Gear Set
For 1.84:1 Ratio Drives.
Drive Gear = 17 teeth; Driven Gear = 19 teeth.
For V6 and 470/485 (4 cyl. etc.) and Gen II (S/N K999999 & Below)
Interchangeable with:
- GLM
- 11230
- Mercruiser Stern Drive
- 43-75324A2
- 43-75325A3
WARNING: Cancer and Reproductive Harm - P65Warnings.ca.gov

