18-2453 Upper Unit Assembly for Mercruiser Sterndrive 1547-9412A23
GLM 19400 ; Mercruiser Stern Drive Alpha I 1547-3917A17
Product OverviewBuilt with proven components, the gears in these units have passed a 300 hour extreme endurance test with flying colors. All units are pressure and vacuum tested and subjected to stringent quality control tests at every step of the manufacturing process.
- replaces: Mercury Marine 1547-9412A23
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