GHmarine Transom Seal Rebuild Bellows Kit 3854127 for Volvo Penta SX/DP & OMC Cobra — gimbal bearing & hose included

GHmarine 3854127 transom seal rebuild bellows kit is a complete service package designed to replace worn bellows, gimbal bearings, exhaust U-joint bellows and related hardware on Volvo Penta SX/DP and OMC Cobra stern drives.

Keep your outdrive watertight and shift-smooth with this comprehensive rebuild kit engineered to fit a range of Volvo Penta SX series and OMC Cobra drives from late 1980s to early 1990s (models without cone clutch). The kit gathers the commonly failing components—bellows, gimbal bearing, mounting gasket, clamps and water hose—so you can perform a focused transom service that restores sealing and reduces the risk of water intrusion into the hull.

What components are included and why do they matter?

This kit contains the key parts needed for a typical transom/bellows rebuild: U-joint exhaust bellows, shift cable bellows, gimbal bearing, outdrive mounting gasket, clamps, and a water hose. Each component addresses a specific leak or wear point on the outdrive assembly.

• U-joint exhaust bellows — prevents exhaust and bilge water entry through the U-joint
• Shift cable bellows — keeps water out around the shift linkage
• Gimbal bearing — supports the drive and seals the transom opening
• Mounting gasket and clamps — ensure a tight, leak-resistant seal at the outdrive flange
• Water hose — replaces brittle or collapsed transom plumbing

Which engine and drive models does this service kit fit?

Designed primarily for OMC Cobra stern drives from model years 1986–1993 (non-cone-clutch variants) and for Volvo Penta SX and DP series drives including SX-S, SX-C, SX-R, SX-M and DP-S. Check your part numbers and model references before ordering to confirm compatibility.

• OMC Cobra drives (1986–1993) without cone clutch
• Volvo Penta SX series: SX-S, SX-C, SX-R, SX-M
• Volvo Penta DP-S drive compatibility
• Replaces OEM numbers: 3854127, 914036, 911826, 3853807, 508105, 3841481

How will installing this kit improve my boat’s performance?

Replacing aged bellows and seals restores reliable watertight barriers and stabilizes shift feel, reducing the chance of sudden water ingress or premature wear. New clamps and gimbal bearings also improve alignment and reduce vibration, which supports smoother operation and longer component life.

• Prevents water intrusion at the transom and U-joint
• Restores firm, responsive shifting and reduces play
• Decreases vibration through a renewed gimbal bearing and secure clamps
• Replaces brittle hoses that can collapse or leak

What should I consider before attempting the rebuild?

Assess drive condition and obtain basic mechanical tools; some kits require trim of old sealant and careful alignment during reassembly. If corrosion, severely worn spline/shaft components, or structural transom damage exist, professional service may be needed beyond the kit’s scope.

• Inspect driveshaft splines and U-joint for wear before reinstalling
• Have marine-grade sealant and torque tools ready for flange assembly
• Confirm model and part-number matches to avoid misfit parts
• Consider professional help if heavy corrosion or structural issues are present

Who is this for? Boaters and marine technicians who own or service Volvo Penta SX/DP and OMC Cobra stern drives from the late 1980s to early 1990s and need a one-stop transom rebuild kit to replace bellows, gimbal bearing and related seals. This GHmarine kit suits DIY-savvy owners doing preventative maintenance or professional yards preparing drives for safe seasons on the water.