Mercury - Driven Gear Bearing Bravo-Series Sterndrives Precision-Hardened Steel 861792. OverviewWhen you spend enough weekends chasing calm water at sunrise or throttling up through a late-afternoon chop, you start to appreciate the parts you never actually see. The ones buried deep inside the sterndrive that keep everything feeling tight, smooth, and predictable. The Mercury Marine part number 861792 Driven Gear Bearing is one of those pieces you trust without needing to think about it. You ins