UANOFCN U-Joint Shift Bellow Kit for Volvo Penta & OMC Cobra 1986–1993 — Complete Transom Seal & Bearing Set

UANOFCN 3854127 U-Joint Shift Bellow Kit is a complete transom seal, bearing and gimbal bellows replacement designed to restore steering and shift protection on 1986–1993 Volvo Penta and OMC Cobra stern drives.

This kit replaces worn or torn bellows and seals that let water enter the drive leg, helping revive smooth shifting and secure gimbal support. It’s built to fit a wide range of Volvo Penta SX-series and OMC Cobra stern drive models made between 1986 and 1993 and includes all the small parts shown in the product images so you can perform a full transom-level refresh without hunting down separate pieces.

Which boats and drive models does this kit fit?

This UANOFCN kit fits multiple Volvo Penta SX- and DP-series stern drives as well as OMC Cobra models produced from 1986 through 1993. Confirm fitment with your drive’s model designation and year before ordering.

• Fits Volvo Penta: SX-S, SX-C, SX-R, SX-M, DP-S, DP-S1, DP-SM
• Fits OMC Cobra stern drives from model years 1986–1993
• Replaces factory part numbers including 508105, 911826, 914036, 983973, 987467 and more
• Includes gimbal bellows, transom seal, bearing components and all shown accessories

How does this kit improve drive performance and prevent leaks?

Worn bellows and seals allow seawater into the transom and gimbal area, accelerating corrosion and degrading steering components. Replacing the bellows and bearing seals restores the protective barrier and supports proper u-joint alignment for smoother shift and steering response.

• New transom seal and bearing for reduced shaft wobble and better load distribution
• Gimbal bellows re-establishes watertight protection at the hull interface
• Includes clamps and fittings needed to secure components reliably
• Restores original equipment part coverage across multiple replacement numbers

What’s included and are there any special installation notes?

The kit ships with the bellows, transom seal, bearing elements and the accessory hardware pictured, enabling an at-dock replacement of the worn transom assembly parts. Basic mechanical tools and moderate familiarity with stern drive service are recommended; some drives require removal of trim components or support stands during installation.

• Complete set of seals, bellows and bearing pieces for transom-level replacement
• Hardware and clamps included — no need to source separate small parts
• Installation typically requires drive support and hand tools; consult a service manual
• Verify drive model and year before starting to ensure correct fit and sequence

Who is this for? This UANOFCN 3854127 kit is aimed at boat owners, mechanics and marine service shops working on Volvo Penta SX-series or OMC Cobra stern drives from 1986–1993 who need an OEM-equivalent transom seal, bearing and gimbal bellows replacement. It’s ideal if you’re seeing bellows cracks, water intrusion, grease leakage around the gimbal area, or play in the shaft that signals a worn bearing. If you prefer a single-purchase solution that bundles the essential parts to renew the transom seal assembly, this kit provides the matched components for a thorough, at-dock refresh.