O-Ring Seal – Fits Volvo Penta Marine & Industrial Engines (Replaces 948981)
O-Ring Seal – Fits Volvo Penta Marine & Industrial Engines (Replaces 948981) is backordered and will ship as soon as it is back in stock.
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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
O-Ring Seal – Fits Volvo Penta Marine & Industrial Engines (Rep...
Product Details
This high-quality O-Ring Seal – Fits Volvo Penta Marine & Industrial Engines (Replaces 948981) is designed for a precise fit on various Volvo Penta marine and industrial engines, including the MD22A, TMD22A, D41A, KAD32P, and AD30A series. It serves as a crucial component for preventing fluid and gas leaks, ensuring reliable engine performance.
This part is a direct replacement for Volvo Penta part numbers 948981 and 948981-6.
- Engineered for marine and industrial environments.
- Designed to prevent leakage of fluids and gases.
- Simple installation as a direct engine component.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 948981 |
| Volvo Penta | 948981-6 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This part is known to fit the following Volvo Penta engine models. Note that this is a representative sample from over 150 compatible models.
| Brand | Model | OEM Part No. | Notes |
|---|---|---|---|
| Volvo Penta | 2003T | 948981 | |
| Volvo Penta | 2003TB | 948981 | |
| Volvo Penta | 290A | 948981 | |
| Volvo Penta | AD30A | 948981 | |
| Volvo Penta | AD31A/B/D/L-A/P-A/XD | 948981 | |
| Volvo Penta | AD40B | 948981 | |
| Volvo Penta | AD41A/B/D/L-A/P-A | 948981 | |
| Volvo Penta | D41A/B/D/L-A | 948981 | |
| Volvo Penta | KAD32P/P-A | 948981 | |
| Volvo Penta | MD22A/A-A/L-A/L-B/P-B | 948981 | |
| Volvo Penta | TMD22-A/B/A/P-C | 948981 |
*Note: The source lists over 150 compatible Volvo Penta engine models. The table above shows a representative sample. See source for complete compatibility list.
Technical Specs
- Product Type
- O-Ring Seal
- Installation
- Engine component
- Housing Material
- Rubber
- Dimensions
- 10.0 cm x 10.0 cm x 1.0 cm
- Weight
- 0.005 kg (0.011 lb)
- Application
- Marine and industrial engines
- Function
- Prevents leakage of fluids and gases
What’s in the Box
- 1 x O-Ring Seal (Replaces 948981/948981-6)
Installation Notes
- Ensure the engine is completely cool and disconnected from power.
- Locate the old O-ring seal requiring replacement. Consult your engine's service manual for the exact position.
- Carefully remove the old, worn seal using an appropriate pick or tool, taking care not to scratch or damage the housing surfaces.
- Thoroughly clean the groove and surrounding area to remove any old sealant, dirt, or corrosion.
- Lightly lubricate the new O-ring with a clean, compatible fluid (e.g., engine oil) to facilitate a smooth installation.
- Gently press the new O-ring into the groove, ensuring it is seated evenly and not twisted.
- Reassemble any components that were removed to access the seal.
- Once reassembled, run the engine and check for any leaks around the newly installed seal.
Troubleshooting & FAQ
How do I confirm this O-ring is the right fit for my engine?
First, check the compatibility table on this page. Second, cross-reference your existing part number with the numbers listed in the Part Number Matrix (948981, 948981-6). Finally, visually compare our product images with your old part before ordering.
What are the signs of a failing O-ring seal?
Common signs include visible fluid (oil, coolant) or gas leaks around the seal's location, a drop in fluid levels without an obvious cause, or decreased engine performance due to pressure loss. A visual inspection may reveal a cracked, brittle, or flattened O-ring.
Can this O-ring be used for applications other than the listed engines?
We only guarantee compatibility with the Volvo Penta models specified. Using this part for other applications is not recommended, as dimensions and material properties are specifically matched to these engines.
How often should engine O-rings be replaced?
Replacement intervals depend on engine hours and operating conditions. It is best practice to replace critical seals like this one during any major engine service, overhaul, or whenever the component it seals is disassembled.
Is any special sealant required during installation?
Generally, no additional sealant is needed. The O-ring is designed to create a seal on its own. A light application of a compatible lubricant on the O-ring itself is recommended to prevent damage during installation.
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
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