Restore peak gearcase performance with the precision-engineered Sinera Marine Bearing 31-30894A1. This high-grade Tapered Roller Bearing is a direct, OEM-quality replacement for the forward position on the propeller shaft in the highly popular MerCruiser Alpha One (Gen I & II), R, and MR sterndrive lower units. Manufactured using premium, hardened steel, our bearing provides superior load handling and reduced friction in high-stress marine environments.
This is a highly sought-after, crucial bearing for one of the most common sterndrives ever produced. Ensure smooth, reliable operation and longevity for your outdrive. Wholesale Marine Parts Global Shipping Available.
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