Transom Sealing Kit – Fits Volvo Penta SX Drives (Replaces 3587651)
Transom Sealing Kit – Fits Volvo Penta SX Drives (Replaces 3587651) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Transom Sealing Kit – Fits Volvo Penta SX Drives (Replaces 3587651)
Product Details
This Transom Sealing Kit – Fits Volvo Penta SX Drives (Replaces 3587651) is used to seal the exhaust system at the transom connection for various Volvo Penta SX Drive models. It ensures a watertight and gas-tight fit between the exhaust components and the boat's transom.
This kit serves as a direct replacement for Volvo Penta part numbers 3587651, 3852846, and 3860984, including both seal variants to cover multiple configurations.
- Installs at the exhaust-to-transom assembly.
- Made from durable black rubber to withstand the marine environment.
- Seals the exhaust connection to prevent water and gas leaks.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 3587651 |
| Volvo Penta | 3852846 |
| Volvo Penta | 3860984 |
Engine & Model Compatibility
This kit is compatible with a range of Volvo Penta SX drive models. It provides the necessary seals for the connection between the exhaust system and the transom assembly. Due to variations, always verify your specific part number before ordering.
Technical Specs
- Product Type
- Transom Sealing Kit
- Installation
- Exhaust to transom assembly
- Connection
- Exhaust system to transom
- Housing Material
- Rubber
- Housing Color
- Black
- Dimensions
- 20.5" L x 17.5" W x 0.2" H
- Weight
- 45.4 g (1.6 oz)
- Fitting Type
- Seal/gasket assembly
- Warranty
- Manufacturer standard
- Other Technical Attributes
- Seals exhaust connection at transom
What’s in the Box
- 1 x Exhaust Seal (3852846)
- 1 x Exhaust Seal (3860984)
Installation Notes
- Disconnect the vessel's battery and any relevant power sources.
- Gain clear access to the exhaust system connection at the inner transom plate.
- Carefully detach the exhaust pipe or bellows from the transom assembly.
- Remove the old, worn-out seal, ensuring you do not damage the mounting surfaces.
- Thoroughly clean the transom and exhaust mating surfaces of any old sealant, corrosion, or debris.
- Select the correct seal from the kit that matches your original part's design.
- Position the new seal correctly onto the transom assembly.
- Apply a suitable marine-grade grease or sealant as recommended by the engine manufacturer.
- Reattach the exhaust pipe or bellows, ensuring all connections are tight and secure.
- Once assembled, check for proper alignment and a secure fit.
- Reconnect the battery, start the engine, and inspect for any water or exhaust leaks around the new seal.
Troubleshooting & FAQ
What engine models does this kit fit?
This kit is designed for various Volvo Penta SX drive models. Because Volvo Penta used different seals across production years, this kit includes two common variants to ensure a proper match. Always compare your old part to the images to confirm fitment.
What are the signs of a failing transom exhaust seal?
Common symptoms include water leaking into the bilge area from the transom, especially when the engine is running, a visible exhaust odor inside the boat, or corrosion around the exhaust connection point on the transom.
How often should this seal be replaced?
Inspect the seal annually for signs of cracking, brittleness, or water leaks. For minimal maintenance, grease the assembly every 200 hours or at least once a year. Proactive replacement during major drive service is recommended to prevent future failure.
Why are two different seals included in the kit?
Volvo Penta utilized different seal designs (part numbers 3852846 and 3860984) for its SX drives. This kit includes both to provide a comprehensive solution that covers the majority of models without requiring you to pre-select a specific one.
Is any special lubricant required during installation?
Yes, the packing box bearings must be water-lubricated at all speeds for optimal performance. Additionally, applying a light coat of marine-grade grease to the rubber seals can ease installation and improve the seal.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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