Sealing Ring – Fits Volvo Penta TAMD, KAD, AD Series Engines (Replaces 858979)
Sealing Ring – Fits Volvo Penta TAMD, KAD, AD Series Engines (Replaces 858979) 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
Sealing Ring – Fits Volvo Penta TAMD, KAD, AD Series Engines (Repla...
Product Details
This OEM-quality Sealing Ring is designed for a wide range of Volvo Penta marine diesel engines, including the TAMD31, TAMD41, KAD300, and AD31 series manufactured from the 1990s through the 2000s. It ensures a precise fit and reliable seal for specified engine components.
This part directly replaces Volvo Penta part number 858979 and serves as a direct successor to parts 838830 and 858945 in the OEM supersession chain.
- Installation is specific to the engine model; consult your service manual for exact placement.
- Engineered for use in marine diesel fuel systems.
- Notes indicate specific use in the intermediate housing assembly for IPS15-A marine propulsion systems.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number | Superseded By | Notes |
|---|---|---|---|
| Volvo Penta | 838830 | 858945 | Part of supersession chain |
| Volvo Penta | 858945 | 858979 | Part of supersession chain |
| Volvo Penta | 858979 | Current OEM part number |
Engine & Model Compatibility
Confirm your engine model in the table below. This part is known to fit the following Volvo Penta engines.
| Brand | Model | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|
| Volvo Penta | AD31 | 4-Stroke | 858979 | |
| Volvo Penta | AD31B | 4-Stroke | 858979 | |
| Volvo Penta | AD31D-A | 4-Stroke | 858979 | |
| Volvo Penta | AD31L-A | 4-Stroke | 858979 | |
| Volvo Penta | AD31P-A | 4-Stroke | 858979 | |
| Volvo Penta | AD31XD | 4-Stroke | 858979 | |
| Volvo Penta | AD41A | 4-Stroke | 858979 | |
| Volvo Penta | AD41B | 4-Stroke | 858979 | |
| Volvo Penta | AD41D | 4-Stroke | 858979 | |
| Volvo Penta | AD41L-A | 4-Stroke | 858979 | |
| Volvo Penta | AD41P-A | 4-Stroke | 858979 | |
| Volvo Penta | AQAD31A | 4-Stroke | 858979 | |
| Volvo Penta | AQAD41A | 4-Stroke | 858979 | |
| Volvo Penta | IPS15-A | 4-Stroke | 858979 | Used in intermediate housing assembly |
| Volvo Penta | IPS15-B | 4-Stroke | 858979 | |
| Volvo Penta | IPS20-D | 4-Stroke | 858979 | |
| Volvo Penta | IPS2-A | 4-Stroke | 858979 | |
| Volvo Penta | IPS2-B | 4-Stroke | 858979 | |
| Volvo Penta | IPS2-C | 4-Stroke | 858979 | |
| Volvo Penta | IPS30-D | 4-Stroke | 858979 | |
| Volvo Penta | IPS3-A | 4-Stroke | 858979 | |
| Volvo Penta | IPS3-C | 4-Stroke | 858979 | |
| Volvo Penta | KAD300-A | 4-Stroke | 858979 | |
| Volvo Penta | KAD32P | 4-Stroke | 858979 | |
| Volvo Penta | KAD42A | 4-Stroke | 858979 | |
| Volvo Penta | KAD42B | 4-Stroke | 858979 | |
| Volvo Penta | KAD42P-A | 4-Stroke | 858979 | |
| Volvo Penta | KAD43P-A | 4-Stroke | 858979 | |
| Volvo Penta | KAD44P | 4-Stroke | 858979 | |
| Volvo Penta | KAD44P-B | 4-Stroke | 858979 | |
| Volvo Penta | KAD44P-C | 4-Stroke | 858979 | |
| Volvo Penta | KAMD300-A | 4-Stroke | 858979 | |
| Volvo Penta | KAMD42A | 4-Stroke | 858979 | |
| Volvo Penta | KAMD42B | 4-Stroke | 858979 | |
| Volvo Penta | KAMD42P-A | 4-Stroke | 858979 | |
| Volvo Penta | KAMD43P-A | 4-Stroke | 858979 | |
| Volvo Penta | KAMD44P-A | 4-Stroke | 858979 | |
| Volvo Penta | KAMD44P-C | 4-Stroke | 858979 | |
| Volvo Penta | TAMD31A | 4-Stroke | 858979 | |
| Volvo Penta | TAMD31B | 4-Stroke | 858979 | |
| Volvo Penta | TAMD31D | 4-Stroke | 858979 | |
| Volvo Penta | TAMD31L-A | 4-Stroke | 858979 | |
| Volvo Penta | TAMD31M-A | 4-Stroke | 858979 | |
| Volvo Penta | TAMD31P-A | 4-Stroke | 858979 | |
| Volvo Penta | TAMD31S-A | 4-Stroke | 858979 | |
| Volvo Penta | TAMD41A | 4-Stroke | 858979 | |
| Volvo Penta | TAMD41B | 4-Stroke | 858979 | |
| Volvo Penta | TAMD41D | 4-Stroke | 858979 | |
| Volvo Penta | TAMD41H-A | 4-Stroke | 858979 | |
| Volvo Penta | TAMD41H-B | 4-Stroke | 858979 | |
| Volvo Penta | TAMD41L-A | 4-Stroke | 858979 | |
| Volvo Penta | TAMD41M-A | 4-Stroke | 858979 | |
| Volvo Penta | TAMD41P-A | 4-Stroke | 858979 | |
| Volvo Penta | TAMD42B | 4-Stroke | 858979 | |
| Volvo Penta | TAMD42WJ-A | 4-Stroke | 858979 |
Technical Specs
- Product Type
- Sealing Ring / Gasket
- Fuel Type
- Diesel
- Weight
- 0.008 kg (0.018 lb)
- Dimensions
- 9.5" L x 10.0" W x 1.5" H
- Placement
- Used in intermediate housing assembly for IPS15-A systems; see service manual for other models.
What’s in the Box
- 1 x Sealing Ring (Replaces 858979)
Installation Notes
- Disconnect the battery and ensure the engine is cool before beginning work.
- Consult your Volvo Penta service manual to locate the specific housing where the sealing ring is installed.
- Remove any components necessary to access the ring.
- Carefully take out the old, used sealing ring, ensuring no damage to the mating surfaces.
- Thoroughly clean both contact surfaces of any old sealant, oil, or debris. A clean surface is critical for a good seal.
- Position the new sealing ring correctly. Make sure it is not twisted or pinched.
- Reassemble all components, torqueing bolts to the manufacturer's specifications.
- After reassembly, reconnect the battery, check for leaks, and test engine operation.
Troubleshooting & FAQ
What are the signs of a failing sealing ring?
Common symptoms include fluid leaks (oil or coolant) around the component it seals, unexplained fluid loss, or overheating. A visual inspection may reveal a brittle, cracked, or deformed ring.
Where is this sealing ring installed?
Its precise location varies by engine. It is noted for use in the intermediate housing assembly for Volvo Penta IPS15-A systems. For all other compatible models, you must refer to your official service manual for its exact placement.
Is this part the same as Volvo Penta 858945 or 838830?
Yes. This part, 858979, is the final number in a supersession chain that includes 858945 and 838830. It is the modern, direct replacement for all previous versions and is functionally identical.
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.
