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F300BETX (4
Reduced cooling performance can lead to serious engine damage
It is critical to ensure your engine's impeller has a 0
inspect and replace it more often to prevent cooling system failure
2L V6 4-Stroke models from 2006 and newer
Transom Seal – Fits MerCruiser Alpha One, R, MR, MC-1 (1983–1990) (Replaces 65533A1) family-yamaha-6mshp F300BETX (4Transom Seal Fits MerCruiser Alpha One, R, MR, MC 1 (19831990) (Replaces 65533A1) This transom seal is designed for MerCruiser Alpha One Generation 1, R, MR, and MC 1 stern drive models manufactured from 1983 to 1990. It creates a robust, watertight barrier between the gimbal housing and the boat transom, preventing leaks and protecting critical drive components. This part is a direct replacement for MerCruiser 65533A1, GLM 86712, and Sierra 18 2692.