Sierra/Prime Line 18-2100 Gimbal Bearing

Sierra Marine 18-2100 - Sierra Marine Heavy-Duty Gimbal Bearings. Sierra Marine offers heavy-duty gimbal bearings for a variety of watercraft applications, including Mercury, OMC, Volvo Penta, GLM, Johnson/Evinrude, and Mallory Marine. These specialty ball bearings/races are used in boat engine driveshafts to help maintain alignment. The stock replacements meet or exceed original equipment quality. The bearings are fit-specific; be sure to match up part numbers to ensure a proper fit.