Mercury Outboard Lower Unit

Poni Marine - Online Verified independent store

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The Mercury lower unit is the propulsion heart of your outboard motor, housing the gearbox, water pump, and propeller shaft. This critical component transfers engine power to the p ropeller while managing water circulation for cooling. Built to withstand saltwater and freshwater environments, it requires regular maintenance including gear oil changes and impeller inspection to ensure optimal performance and longevity. Whether you're replacing a worn unit or upgrading your setup, a quality Mercury lower unit delivers reliable thrust and durability for serious boaters. Show more