Quicksilver 61100A1 Upper Driveshaft Bearing Assembly

The Quicksilver 61100A1 is a genuine OEM upper driveshaft housing bearing assembly designed for MerCruiser sterndrive units. This tapered roller bearing set provides critical support for the driveshaft in the outdrive housing, ensuring smooth operation and reliable performance in marine environments.

Key Features:

• Genuine Mercury Marine OEM part - factory original equipment quality
• Upper driveshaft housing bearing assembly with 1-15/16" outer diameter
• Tapered roller bearing design for superior load handling
• Direct replacement for Mercury part number 31-61100A1
• Compatible with MerCruiser R, MR, Alpha One, Alpha One SS, and Alpha One Gen II outdrives (serial 0F679999 and below)

This bearing assembly is a critical component in the driveshaft housing assembly and gear assembly of MerCruiser sterndrive systems. Engineered to withstand harsh marine conditions, it provides reliable support for rotating driveshaft components. Cross-references include GLM 21510, Mallory 9-75117, and Sierra 18-1165.