Bonbo Gimbal Bearing Alignment & Install Kit for Mercruiser/Volvo Sterndrives — Black Hardened Steel

Bonbo's Gimbal Bearing Alignment and Install Kit is a heavy-duty alignment and installation tool set designed to fit Mercruiser Alpha/Alpha 1/Bravo, Volvo, OMC, MR, and Cobra sterndrives for precise gimbal bearing alignment and seal installation.

This compact kit brings workshop-grade alignment and install tools to boat owners and mechanics who work on sterndrive propulsion systems. Built from hardened steel with a protective black coating, the set streamlines aligning the drive shaft receiver to the gimbal bearing and simplifies installing both the gimbal bearing and the drive shaft seal without drilling. The components are intended to reduce installation wear and help preserve the drive, coupler, and bearing life when fitted correctly.

How does this kit make gimbal bearing alignment easier?

The kit provides dedicated alignment drivers and adapters that position the drive shaft receiver precisely relative to the gimbal bearing, cutting guesswork. With a properly aligned receiver you reduce side-load and uneven wear on bearings and couplers during operation.

• Includes bearing alignment driver sized for common sterndrive models
• Eliminates improvised shims and uneven tap-in methods
• Speeds up alignment to shorten repair time

Can I install the gimbal bearing and shaft seal without extra modifications?

Yes — the supplied bearing install adapter is designed to seat the gimbal bearing and drive shaft seal without drilling or modifying the housing. This reduces the risk of damaging the housing bore or the bearing lip during installation.

• Press-fit adapter protects bearing surfaces during seating
• No need to drill or alter the gimbal housing
• Compatible with common sterndrive seal sizes used by Mercruiser and Volvo

What materials and construction ensure long service life?

All working parts are made from high-strength steel with a protective black coating to resist corrosion, impact, and wear in a marine environment. Precision machining gives consistent hardness and concentricity so the drivers perform reliably over repeated uses.

• Hardened steel components for durability
• Black corrosion-resistant coating for marine conditions
• High-precision fit reduces slop and marring during installs

Which sterndrive models does the Bonbo kit support?

This set is sized to work with a broad range of sterndrives: Mercruiser Alpha and Alpha 1 series, Bravo drives, Volvo Penta units, OMC, MR, and Cobra outdrives. It covers the common bearing and seal dimensions these manufacturers use, offering versatility for fleet or personal use.

• Fits Mercruiser Alpha, Alpha 1, Bravo series
• Compatible with Volvo Penta gimbal and seal sizes
• Works with OMC, MR, and Cobra sterndrives

Who is this for: The Bonbo Gimbal Bearing Alignment and Install Kit is aimed at marine mechanics, boatyard technicians, and DIY boat owners who perform sterndrive maintenance or rebuilds. If you routinely replace gimbal bearings or seals, need faster, safer installs, or maintain multiple drive models, this durable, precision kit reduces installation risk and saves shop time.