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Some premium versions may even use upgraded materials like Viton for enhanced durability
remove the old impeller from the pump housing
a weak or inconsistent water stream from the "telltale" outlet
including specific Mercury
Thoroughly clean all mating surfaces to remove any old gasket material or corrosion
Transom Seal – Fits MerCruiser Alpha One, R, MR, MC-1 (1983–1990) (Replaces 65533A1) 210HP Some premium versions may evenProduct Details This Transom Seal Fits MerCruiser Alpha One, R, MR, MC 1 (19831990) (Replaces 65533A1) is designed for MerCruiser Alpha One Generation 1, R, MR, and MC 1 stern drive models from 1983 to 1990. It is engineered to create a durable seal between the gimbal housing and the transom plate, preventing water intrusion. This component is a direct cross reference for MerCruiser 65533A1, GLM 86712, and Sierra 18 2692, ensuring precise fitment and
