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SIERRA Upper Unit Assembly for Mercruiser Stern Drives

Model # 3735560Mfg # 18-2450


Customer Reviews
Delivery within 2 - 3 weeks.

Product Description

Built 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 1547-9412A20