GH Marine  |  SKU: 18BK5002

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

Regular price $79.20


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GH MARINE / BELLOWS & RELATED PARTS

About this part

Multi-component transom bellows seal kit containing a U-joint bellows with clamp, exhaust bellows with clamp, shift cable bellows, gimbal bearing, water inlet hose, outdrive mounting gasket kit, and hose clamps. Designed for specified Volvo Penta SX and DP-S series sterndrives and most OMC Cobra sterndrives from 1986 onward when component references and exhaust configurations match.

The listed replacement numbers identify individual components within the kit and should not be treated as a single complete-kit OEM part number.

Match the application

This service kit fits the Volvo Penta SX and DP-S model designations listed below, as well as most 1986 and later OMC Cobra sterndrives subject to clutch and exhaust bellows verification. Identify the complete drive model including its suffix before ordering.

  • Volvo Penta · SX

    Sterndrive transom service application.

    Application match

  • Volvo Penta · SX-S

    Sterndrive transom service application.

    Application match

  • Volvo Penta · SX-C

    Sterndrive transom service application.

    Application match

  • Volvo Penta · SX-R

    Sterndrive transom service application.

    Application match

  • Volvo Penta · SX-M

    Sterndrive transom service application.

    Application match

  • Volvo Penta · DP-S

    Sterndrive transom service application.

    Application match

  • Volvo Penta · DP-S1

    Sterndrive transom service application.

    Application match

  • Volvo Penta · DP-SM

    Sterndrive transom service application.

    Application match

  • OMC · Cobra

    Year: 1986 and later

    Fits most 1986 and later models when the included components match the drive configuration. Confirm the exact drive version, distinguish 1986–1993 dog-clutch arrangements from later cone-clutch arrangements, and verify the exhaust bellows reference number (this kit includes exhaust bellows 3850426 / 18-1074 rather than 914036 / 18-2764) instead of relying on model year alone.

    Applies with the stated conditions

Check the full drive model suffix before ordering. Do not assume that Volvo Penta SX-A or DPS-A/B drives use the same complete kit, and match each component reference separately rather than selecting the kit from a single bearing or bellows number.

Numbers to compare

No single whole-kit OEM number is established for this package. Compare the individual component reference numbers and additional catalogue references below against your existing parts.

U-Joint Bellows with Clamp (included component references) Volvo Penta / OMC: 3854127
Volvo Penta: 3841481, 22197130
Sierra: 18-2765
Exhaust Bellows with Clamp (included component references) Volvo Penta / OMC: 3850426
Sierra: 18-1074
Mallory: 9-72711
Reference number: 0767724
Shift Cable Bellows (included component references) OMC Cobra: 911826, 89210
Sierra: 18-2763
Gimbal Bearing (included component references) Volvo Penta / OMC Cobra: 3853807
Mercury Mariner: 30-60794A4
Sierra: 18-2100
Mallory: 9-72410
Reference numbers: 21905, 0983937
Water Inlet Hose (included component references) Reference numbers: 911830, 778188
Additional Reference Numbers Volvo Penta: 23075752, 3888916
OMC / OMC Cobra: 983937, 983973, 987467
Sierra: 18-2772-1
GLM: 21906, 89200, 89190
CEF: 500514K, CEF500514K, CEF500528, CEF500536K
RECMAR: REC3841481, REC3850426, REC3888916
Other reference numbers: 43.932.60, 508105, RM22197130
Separate Catalogue Version (for exhaust comparison) Evinrude / Johnson / OMC: 914036
Sierra: 18-2764
Note: 914036 / 18-2764 and 3850426 / 18-1074 represent separate exhaust bellows catalogue versions; verify which version your OMC Cobra drive requires before ordering.

Technical details

Product type Transom Bellows Seal Kit
Brand GH Marine
Application position Sterndrive transom assembly (bellows, gimbal bearing, water inlet hose, and outdrive mounting interface)
Kit configuration Multi-component service kit with gimbal bearing, water inlet hose, and outdrive mounting gasket kit

Supplied contents

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

Workshop sequence

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

  1. Secure the vessel out of the water, disconnect battery power, and properly support the sterndrive assembly before removing the outdrive and old mounting gaskets.
  2. Remove the existing U-joint bellows, exhaust bellows, shift cable bellows, water inlet hose, and gimbal bearing, then clean and inspect all housing flanges and sealing surfaces.
  3. Compare each new component in the kit against the removed parts to verify matching profiles, hose connections, and bearing seating before installation.
  4. Seat the gimbal bearing and install the new bellows and water inlet hose without twists or folds, positioning clamps and applying any required adhesives strictly according to the service manual for your specific sterndrive model.
  5. Reinstall the sterndrive using the supplied outdrive mounting gasket kit and verify smooth shift cable movement and full trim/steering clearance across the operating range.

Questions from the workshop

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

Do not assume that SX-A or DPS-A/B sterndrives use the same complete kit as the listed SX, SX-S, SX-C, SX-R, SX-M, DP-S, DP-S1, and DP-SM models. Always verify the full drive suffix and individual component part numbers for your unit.

What should I check before ordering for an OMC Cobra sterndrive?

Do not select by the name "Cobra" or model year alone. Distinguish between the 1986–1993 dog-clutch arrangement and later cone-clutch arrangements, confirm whether your drive uses an exhaust boot or bellows, and check whether your exhaust bellows matches 3850426 / 18-1074 (included in this kit) or the separate 914036 / 18-2764 catalogue version.

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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