GH Marine  |  SKU: 18BK5002

Transom Bellows Seal Kit for Volvo Penta SX, DP-S & OMC Cobra

Regular price $87.90


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Review our returns policy or contact GH Marine for help with an order.

Delivery information

Estimated delivery: 7–15 calendar days.

GH MARINE / BELLOWS & RELATED PARTS

About this part

Multi-component transom bellows seal kit containing U-joint bellows with clamp, exhaust bellows with clamp, shift cable bellows, gimbal bearing, water inlet hose, outdrive mounting gasket kit, and hose clamps. Listed for specified Volvo Penta SX and DP-S sterndrive designations and most OMC Cobra sterndrives from 1986 onward, subject to drive configuration and component-number matching.

No single whole-kit OEM number is established for this multi-component service kit; the listed replacement numbers identify individual components and should not be treated as interchangeable part numbers for the complete kit.

Match the application

Identify the complete drive model including its full suffix before ordering. SX-S, SX-C, SX-R, SX-M, DP-S, DP-S1, and DP-SM are separately listed Volvo Penta designations; do not assume that SX-A or DPS-A/B uses the same complete kit. For OMC Cobra drives, distinguish the 1986–1993 dog-clutch arrangement from later cone-clutch arrangements, check whether the drive uses an exhaust boot, and compare the existing exhaust-bellows reference (3850426 / 18-1074 and 914036 / 18-2764 are separate catalogue versions) rather than relying on “Cobra” or model year alone.

  • Volvo Penta · SX

    Check the full drive model suffix and match each included component reference against your transom assembly.

    Application match

  • Volvo Penta · SX-S

    Listed for Volvo Penta SX-S sterndrive applications.

    Application match

  • Volvo Penta · SX-C

    Listed for Volvo Penta SX-C sterndrive applications.

    Application match

  • Volvo Penta · SX-R

    Listed for Volvo Penta SX-R sterndrive applications.

    Application match

  • Volvo Penta · SX-M

    Listed for Volvo Penta SX-M sterndrive applications.

    Application match

  • Volvo Penta · DP-S

    Listed for Volvo Penta DP-S sterndrive applications.

    Application match

  • Volvo Penta · DP-S1

    Listed for Volvo Penta DP-S1 sterndrive applications.

    Application match

  • Volvo Penta · DP-SM

    Listed for Volvo Penta DP-SM sterndrive applications.

    Application match

  • OMC · Cobra

    Year: 1986 and later

    Listed for most OMC Cobra sterndrives from 1986 onward. Confirm the exact drive version, distinguish 1986–1993 dog-clutch arrangements from later cone-clutch arrangements, verify whether the drive uses an exhaust boot, and match the exhaust bellows reference number (this kit includes exhaust bellows referenced to 3850426 / 0767724 / 18-1074 / 9-72711, which is a separate catalogue version from 914036 / 18-2764).

    Applies with the stated conditions

Numbers to compare

Match each component separately rather than selecting the complete kit from a single bearing or bellows number. First verify the included component references below; additional catalogue numbers associated with individual components or separate exhaust versions are listed separately for comparison.

Complete kit OEM reference No single whole-kit OEM number established
U-Joint Bellows with Clamp (included component) Volvo Penta / OMC 3854127; Volvo Penta 3841481, 22197130; Sierra 18-2765
Exhaust Bellows with Clamp (included component) Volvo Penta / OMC 3850426; Reference 0767724; Sierra 18-1074; Mallory 9-72711
Shift Cable Bellows (included component) OMC Cobra 911826, 89210; Sierra 18-2763
Gimbal Bearing (included component) Volvo Penta / OMC Cobra 3853807; Sierra 18-2100; Mallory 9-72410; Mercury Mariner 30-60794A4; Reference 21905, 0983937
Water Inlet Hose (included component) Reference 911830, 778188
Separate exhaust bellows catalogue version (verify configuration) Evinrude / Johnson / OMC 914036; Sierra 18-2764 (separate catalogue version from 3850426 / 18-1074)
Additional component & cross-reference numbers Volvo Penta 23075752, 3888916; OMC Cobra 983937; OMC 983973, 987467; Sierra 18-2772-1; GLM 21906, 89200, 89190; CEF 500514K, CEF500514K, CEF500528, CEF500536K; RECMAR REC3841481, REC3850426, REC3888916; Reference 43.932.60, 508105, RM22197130

Technical details

Product type Transom Bellows Seal Kit with Gimbal Bearing
Brand GH Marine
Application position Sterndrive transom assembly (bellows, gimbal bearing, water inlet hose, and outdrive mounting seals)
Target drive families Volvo Penta Sterndrive (SX, SX-S, SX-C, SX-R, SX-M, DP-S, DP-S1, DP-SM); OMC Cobra Sterndrive (1986 & Later, subject to configuration)

Supplied contents

Component Quantity & component references
U-Joint Bellows with Clamp 1x (Included — replaces 3854127, 3841481, 18-2765, 22197130)
Exhaust Bellows with Clamp 1x (Included — replaces 3850426, 0767724, 18-1074, 9-72711)
Shift Cable Bellows 1x (Included — replaces 911826, 89210, 18-2763)
Gimbal Bearing 1x (Included — replaces 3853807, 18-2100, 9-72410, 21905, 0983937, 30-60794A4)
Water Inlet Hose 1x (Included — replaces 911830, 778188)
Outdrive Mounting Gasket Kit 1x (Included)
Hose Clamps 1x (Included)

Workshop sequence

General workshop guidance only; use the service procedure for your exact drive or engine configuration.

  1. Compare every supplied component—U-joint bellows, exhaust bellows, shift cable bellows, gimbal bearing, water inlet hose, and mounting gaskets—against the removed parts and your sterndrive service manual before beginning installation.
  2. Clean and inspect all transom housing and pivot housing mating surfaces, bellows grooves, and hose spigots so they are free of corrosion, old adhesive, and debris.
  3. Seat the gimbal bearing and route the U-joint, exhaust, and shift cable bellows and water inlet hose without twists or kinks, positioning clamps and applying adhesives or sealants according to the service manual for your specific Volvo Penta or OMC Cobra drive.
  4. Reinstall the sterndrive using the supplied outdrive mounting gasket kit and verify shift cable travel and trim/steering clearance across the full range of motion.

Questions from the workshop

Can I use this kit on a Volvo Penta SX-A or DPS-A/B sterndrive?

Do not assume that SX-A or DPS-A/B uses the same complete kit as SX-S, SX-C, SX-R, SX-M, DP-S, DP-S1, or DP-SM. Identify your full drive model suffix and match each individual component part number before ordering.

How do I verify if this kit fits my 1986 or later OMC Cobra drive?

Do not select by the name “Cobra” or model year alone. Distinguish between 1986–1993 dog-clutch drives and later cone-clutch arrangements, check whether your drive uses an exhaust boot, and verify the exhaust bellows number (this kit includes exhaust bellows referenced to 3850426 / 18-1074, which is a separate catalogue version from 914036 / 18-2764).

About GH Marine

GH Marine focuses on bellows and related marine service parts. Compare the application details, reference numbers and supplied contents together to select the part for your repair.

Delivery information

Estimated delivery: 7–15 calendar days.

Help with your order

For application questions, have your drive or engine identification and required part number ready.

Contact GH Marine / fitment help · Returns policy

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