UANOFCN gimbal bearing for MerCruiser Alpha One Gen 2 – 60794A4 direct-replacement, reduces vibration

The UANOFCN 60794A4 gimbal bearing is a direct-replacement marine bearing designed to restore smooth, centered steering and lower drivetrain vibration in compatible MerCruiser, OMC and Volvo Penta sterndrives.

This precision gimbal bearing is manufactured to fit a range of older MerCruiser and OMC sterndrive models plus select Volvo Penta engines, making it a practical part for routine maintenance or a steering-system rebuild. It replaces several OEM numbers so you can match by cross-reference instead of measuring, and it ships as a single, ready-to-install unit. The part is intended for models such as OMC Cobra/King Cobra, MerCruiser Bravo I/II/III and many Alpha One/R/MR drives — check your engine year and part history to confirm compatibility.

Which drives and engines will this bearing fit?

This bearing fits many legacy OMC, MerCruiser and Volvo Penta sterndrives and common V-6/V-8 marine engines from the 1990s. It is meant primarily for Alpha One Generation II and several Bravo and Cobra drive variants, but compatibility varies by year and submodel.

• Fits OMC Cobra and King Cobra drives and MerCruiser Bravo I/II/III units.
• Compatible with MerCruiser R, MR, Alpha One sterndrives; may not fit some Gen II drives manufactured 1998 and later.
• Cross-references include 30-60794A2/A4, 30-60794B4 and 30-879194A02.
• Also matches Sierra 18-2100, GLM 21900 and Volvo Penta OEM numbers such as 21752712 and 3853807.

How do I know if this is the right replacement for my sterndrive?

Confirming fit requires checking your existing part number or the service manual for your boat engine and drive year. If your current gimbal bearing shows noise, play, or lubrication failure, a matching OEM cross-reference simplifies selection.

• Compare your old bearing number to the listed replacements (30-60794A4, 3853807, 21752712, etc.).
• Verify drive model: MerCruiser Alpha One Gen 2, Bravo I/II/III, or OMC Cobra/King Cobra.
• Check engine year: many fits are for 1994–1998 Volvo Penta V6/V8 applications.
• If uncertain, consult your service manual or a marine mechanic before installation.

What are the practical benefits and installation notes?

Replacing a worn gimbal bearing reduces vibration, improves steering precision and helps prevent premature wear elsewhere in the drivetrain. Installation is straightforward for anyone comfortable removing the sterndrive and following torque and alignment procedures.

• Restores proper propeller shaft alignment and reduces steering stiffness or wobble.
• Sold individually: package contains 1 pc Gimbal Bearing 30-60794A4.
• Follow manufacturer torque specs and lubrication guidance during installation.
• Inspect surrounding seals and u-joints; replace related wear items while drive is out.

Are there fitment exceptions or things to avoid?

While the bearing covers many models, certain post-1998 Gen II drives and some unusual OEM variations may not accept it. Avoid forcing the part into a non-matching housing to prevent damage.

• May not fit Gen II drives produced 1998 and later—verify year and model.
• Do not hammer or modify the bearing—use proper press or driver tools for fitment.
• Use matched seals and fasteners to maintain water-tight integrity after replacement.
• Contact a marine service provider for confirmation if you see dimensional or fit doubts.

Who is this for: The UANOFCN 60794A4 gimbal bearing is aimed at boat owners, marine technicians and DIY mechanics maintaining older MerCruiser, OMC and Volvo Penta sterndrives. It’s a practical replacement for anyone restoring steering smoothness and drivetrain alignment on compatible 1990s-era V6 and V8 marine engines, or for shops stocking commonly referenced OEM cross-replacements for field repairs.