Upper Gear Housing Seal Kit – Fits MerCruiser R, MR & Alpha One Gen I Drives (Replaces Mercury 26-32511A1, Sierra 18-2648) 4.5HP Thoroughly clean the mating surfaces

Thoroughly clean the mating surfaces on both the cylinder head and the manifold

Can I reuse this seal if I remove the propeller shaft for other maintenance

Is there a correct orientation for installing this filter

Installation: Secures the saildrive to the boat hull

especially when operating in saltwater

Upper Gear Housing Seal Kit – Fits MerCruiser R, MR & Alpha One Gen I Drives (Replaces Mercury 26-32511A1, Sierra 18-2648) 4.5HP Thoroughly clean the mating surfacesProduct 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