Rubber Bellow – Fits Volvo Penta Saildrive 110S-150S (Replaces 21389074, 22247894)
Rubber Bellow – Fits Volvo Penta Saildrive 110S-150S (Replaces 21389074, 22247894) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Rubber Bellow – Fits Volvo Penta Saildrive 110S-150S (Replaces 2138...
Product Details
This aftermarket Rubber Bellow for Volvo Penta Saildrive provides a crucial waterproof seal between the saildrive unit and the hull. It is engineered for direct compatibility with a range of saildrive models, including the 110S, 120S, 130S, and 150S series, ensuring reliable performance in marine environments.
This component is a direct replacement for Volvo Penta OEM part numbers 21389074 and 22247894.
- Mounts externally on the saildrive unit.
- Secured via a compression fit using the included clamps.
- Made from durable, black rubber to withstand marine conditions.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 21389074 |
| Volvo Penta | 22247894 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This bellow is designed for the following Volvo Penta saildrive models.
| Brand | Model | OEM Part No. |
|---|---|---|
| Volvo Penta | 110S | 21389074/22247894 |
| Volvo Penta | 120S | 21389074/22247894 |
| Volvo Penta | 120SA | 21389074/22247894 |
| Volvo Penta | 120SB | 21389074/22247894 |
| Volvo Penta | 120SC | 21389074/22247894 |
| Volvo Penta | 120SD | 21389074/22247894 |
| Volvo Penta | 120SE | 21389074/22247894 |
| Volvo Penta | 130S | 21389074/22247894 |
| Volvo Penta | 130S-A | 21389074/22247894 |
| Volvo Penta | 130S-B | 21389074/22247894 |
| Volvo Penta | 130S-C | 21389074/22247894 |
| Volvo Penta | 130S-D | 21389074/22247894 |
| Volvo Penta | 130SR | 21389074/22247894 |
| Volvo Penta | 130SR-A | 21389074/22247894 |
| Volvo Penta | 130SR-B | 21389074/22247894 |
| Volvo Penta | 130SR-C | 21389074/22247894 |
| Volvo Penta | 130SR-D | 21389074/22247894 |
| Volvo Penta | 150S | 21389074/22247894 |
| Volvo Penta | 150S-A | 21389074/22247894 |
| Volvo Penta | 150S-B | 21389074/22247894 |
| Volvo Penta | 150S-C | 21389074/22247894 |
| Volvo Penta | 150S-D | 21389074/22247894 |
| Volvo Penta | 150SR-A | 21389074/22247894 |
| Volvo Penta | 150SR-B | 21389074/22247894 |
| Volvo Penta | 150SR-C | 21389074/22247894 |
| Volvo Penta | 150SR-D | 21389074/22247894 |
| Volvo Penta | MS25S | 21389074/22247894 |
| Volvo Penta | MS25S-A | 21389074/22247894 |
| Volvo Penta | MS25S-R | 21389074/22247894 |
| Volvo Penta | MS25S-RA | 21389074/22247894 |
| Volvo Penta | S120C | 21389074/22247894 |
Technical Specs
- Product Type
- Rubber Bellow / Diaphragm Kit
- Installation
- External mount on saildrive unit
- Connection
- Fitted with included clamps
- Housing Material
- Rubber
- Housing Color
- Black
- Fitting Type
- Compression fit with clamps
- Other Technical Attributes
- Waterproof seal between saildrive and hull
What’s in the Box
- 1 x Rubber Bellow/Diaphragm Kit (Replaces 21389074/22247894)
Installation Notes
- Haul the vessel out of the water to access the saildrive unit.
- Disconnect the saildrive from the engine and supporting structures.
- Carefully remove the old clamps and cut or pry the old rubber bellow off the saildrive and hull interface.
- Thoroughly clean both mounting surfaces, ensuring they are free of old adhesive, rubber, and corrosion.
- Position the new bellow, ensuring it is correctly oriented and seated on both the saildrive and hull flanges.
- Apply a suitable marine-grade sealant if recommended by the manufacturer for your specific model.
- Secure the new bellow with the provided clamps, tightening them to the manufacturer's specified torque.
- Reconnect the saildrive to the engine and re-install all hardware.
- Once the vessel is back in the water, carefully check for any signs of leaks around the new seal.
Troubleshooting & FAQ
How do I know if this bellow fits my specific boat?
This bellow is designed for Volvo Penta saildrive models 110S, 120S, 130S, and 150S, plus their variants as listed in the compatibility table. The most reliable way to confirm fitment is by matching the OEM part number (21389074 or 22247894) with your existing part or service manual.
What are the signs of a failing saildrive bellow?
Visible cracks, perishing, or deformation of the rubber are clear indicators. Water ingress into the bilge, especially when the engine is running or in rough seas, is a critical sign that the seal may be compromised and requires immediate inspection.
What is the recommended replacement interval?
Volvo Penta recommends replacing the saildrive diaphragm every 7 years as a critical preventative maintenance item, regardless of visible condition. Failure to do so can lead to catastrophic water ingress.
Is any special adhesive required for installation?
While this is a compression-fit part secured by clamps, some installers apply a thin layer of marine-grade adhesive sealant as an extra precaution. Consult your Volvo Penta service manual for the official recommendation for your specific model.
Can I install this part myself?
This is a critical component for your vessel's integrity. While experienced mechanics can perform the replacement, it requires hauling the boat and potentially separating the engine from the drive. For safety and peace of mind, professional installation is strongly recommended.
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.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
