Mercury Outboard Lower Unit

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The Mercury lower unit casting number 1623-2022 is a precision-engineered component designed for reliable outboard motor performance. This OEM part ensures proper gear engagement, oil circulation, and propeller shaft alignment on compatible Mercury engines. Built to exacting marine specifications, it delivers the durability and dependability required for extended water operation. Ideal for replacement or restoration projects, this casting maintains factory performance standards and compatibility with your Mercury outboard system. Show more