Fit Mercruiser RMR Alpha One Gen II Kit 32-99904Q 32-864589 32-864588

Gimbal Bearing Kit for Mercruiser Alpha One Gen II

This Gimbal Bearing Kit for the Mercruiser Alpha One Gen II is a complete replacement assembly that sustains the steering and drive alignment on sterndrive units, with OEM cross-reference numbers 32-99904Q, 32-864589, and 32-864588 for direct fitment.

Overview

This Gimbal Bearing Kit for Mercruiser Alpha One Gen II replaces a worn bearing assembly to keep the drive shaft supported and the steering yoke free of vibration. It is intended for boat owners and marine mechanics servicing Mercruiser Alpha One Gen II outdrives. The kit ensures the gimbal bearing and its housing match the dimensions required for reliable operation.

Built For Performance

• Precision-engineered bearing race for smooth steering input
• Includes necessary seals and retaining components for a complete install
• Corrosion-resistant materials for saltwater and freshwater use
• Direct replacement for OEM part numbers 32-99904Q, 32-864589, 32-864588
• Finished hub surface for accurate alignment with the shift cable bellows

Fits These Machines

• for Mercruiser Alpha One Gen II sterndrive
• for Mercruiser Alpha One Gen II with 32-99904Q spec
• for Mercruiser Alpha One Gen II with 32-864589 spec
• for Mercruiser Alpha One Gen II with 32-864588 spec

On-The-Job Use

• Used during outdrive reassembly after bellows replacement
• Installed when steering stiffness or grinding noise appears in the gimbal area
• Commonly replaced during annual marine maintenance
• Required when servicing the shift cable grommet on Alpha One Gen II units

Specs At A Glance

Good To Know

Q: What is the function of the gimbal bearing in an Alpha One Gen II? A: The gimbal bearing supports the engine-to-drive shaft and allows the outdrive to tilt and steer smoothly. Worn bearings cause play and misalignment.

Q: How do I confirm this kit matches my serial number? A: Check your outdrive serial number against the Mercruiser Alpha One Gen II parts diagram, as some early models have slight dimensional differences. Use the listed OEM numbers to verify fit with your dealer.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.