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especially when operating in saltwater
Can I reuse this seal if I remove the propeller shaft for other maintenance
professional installation is advised
Thoroughly clean the mating surfaces on both the cylinder head and the manifold
though it's not typically required
Upper Gear Housing Seal Kit – Fits MerCruiser R, MR & Alpha One Gen I Drives (Replaces Mercury 26-32511A1, Sierra 18-2648) 4.5HP especially when operating in saltwaterProduct Details This Upper Gear Housing Seal Kit provides all necessary components to reseal the upper unit on MerCruiser #1, R, MR, and Alpha One Gen I stern drives manufactured from 19641991 (serial numbers 1684188 through D469858). It ensures a reliable, leak free seal to protect your drive's internal components. This kit serves as a direct replacement for Mercury part numbers 26 32511A1, 26 32511A3, and 26 32511B1, as well as Sierra 18 2648, GLM
