Circulation Mechanical Seal – Fits Volvo Penta Marine Diesel Engines (Replaces 1676432, 1545283, 1665527)
Circulation Mechanical Seal – Fits Volvo Penta Marine Diesel Engines (Replaces 1676432, 1545283, 1665527) 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
Circulation Mechanical Seal – Fits Volvo Penta Marine Diesel Engine...
Product Details
This is a high-quality aftermarket Circulation Mechanical Seal – Fits Volvo Penta Marine Diesel Engines. It serves as an essential sealing ring for the circulation water cooling pump, ensuring the integrity and proper function of your engine's cooling system by preventing leaks.
This component is a direct replacement for Volvo Penta part numbers 1676432, 1545283, 1665527, 1542833, and 1674032.
- Designed as a direct-fit replacement component for the water cooling pump.
- Engineered to meet OEM specifications for a reliable, leak-free seal.
- Critical for maintaining the efficiency and safety of the marine cooling system.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 1676432 |
| Volvo Penta | 1545283 |
| Volvo Penta | 1665527 |
| Volvo Penta | 1542833 |
| Volvo Penta | 1674032 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This seal fits a wide range of Volvo Penta marine diesel engines in the 30, 31, 40, 41, 42, 60, 61, 62, 63, 70, 71, 72, 73, 74, 100, and 730 series.
| Brand | Model | OEM Part No. |
|---|---|---|
| Volvo Penta | AQAD30A | 1676432 |
| Volvo Penta | MD30A | 1676432 |
| Volvo Penta | TAMD30A | 1676432 |
| Volvo Penta | TD30A | 1676432 |
| Volvo Penta | TMD30A | 1676432 |
| Volvo Penta | AD31A | 1676432 |
| Volvo Penta | AD31B | 1676432 |
| Volvo Penta | AD31D-A | 1676432 |
| Volvo Penta | AD31L-A | 1676432 |
| Volvo Penta | AD31P-A | 1676432 |
| Volvo Penta | AD31XD | 1676432 |
| Volvo Penta | AQAD31A | 1676432 |
| Volvo Penta | MD31A | 1676432 |
| Volvo Penta | TAMD31A | 1676432 |
| Volvo Penta | TAMD31B | 1676432 |
| Volvo Penta | TAMD31D | 1676432 |
| Volvo Penta | TAMD31L-A | 1676432 |
| Volvo Penta | TAMD31M-A | 1676432 |
| Volvo Penta | TAMD31P-A | 1676432 |
| Volvo Penta | TAMD31S-A | 1676432 |
| Volvo Penta | TD31ACE | 1676432 |
| Volvo Penta | TMD31A | 1676432 |
| Volvo Penta | TMD31B | 1676432 |
| Volvo Penta | TMD31D | 1676432 |
| Volvo Penta | TMD31L-A | 1676432 |
| Volvo Penta | AQAD40A | 1676432 |
| Volvo Penta | AQAD40B | 1676432 |
| Volvo Penta | AQD40A | 1676432 |
| Volvo Penta | MD40A | 1676432 |
| Volvo Penta | TAMD40A | 1676432 |
| Volvo Penta | TAMD40B | 1676432 |
| Volvo Penta | TD40A | 1676432 |
| Volvo Penta | TMD40A | 1676432 |
| Volvo Penta | TMD40B | 1676432 |
| Volvo Penta | TMD40C | 1676432 |
| Volvo Penta | AD41A | 1676432 |
| Volvo Penta | AD41B | 1676432 |
| Volvo Penta | AD41 | 1676432 |
| Volvo Penta | AD41L-A | 1676432 |
| Volvo Penta | AD41P-A | 1676432 |
| Volvo Penta | AQAD41A | 1676432 |
| Volvo Penta | D41A | 1676432 |
| Volvo Penta | D41B | 1676432 |
| Volvo Penta | D41D | 1676432 |
| Volvo Penta | D41L-A | 1676432 |
| Volvo Penta | TAMD41A | 1676432 |
| Volvo Penta | TAMD41B | 1676432 |
| Volvo Penta | TAMD41D | 1676432 |
| Volvo Penta | TAMD41H-A | 1676432 |
| Volvo Penta | TAMD41H-B | 1676432 |
| Volvo Penta | TAMD41L-A | 1676432 |
| Volvo Penta | TAMD41P-A | 1676432 |
| Volvo Penta | TMD41A | 1676432 |
| Volvo Penta | TMD41B | 1676432 |
| Volvo Penta | TMD41D | 1676432 |
| Volvo Penta | TMD41L-A | 1676432 |
| Volvo Penta | D42A | 1676432 |
| Volvo Penta | KAD42P-A | 1676432 |
| Volvo Penta | KAMD42P-A | 1676432 |
| Volvo Penta | TAMD42B | 1676432 |
| Volvo Penta | TAMD60A | 1676432 |
| Volvo Penta | TAMD60B | 1676432 |
| Volvo Penta | TAMD60C | 1676432 |
| Volvo Penta | TD60A | 1676432 |
| Volvo Penta | TD60B | 1676432 |
| Volvo Penta | TD60D | 1676432 |
| Volvo Penta | TiD60D | 1676432 |
| Volvo Penta | TAMD61A | 1676432 |
| Volvo Penta | TAMD62A | 1676432 |
| Volvo Penta | TAMD63L-A | 1676432 |
| Volvo Penta | TAMD63P-A | 1676432 |
| Volvo Penta | AQD70B | 1676432 |
| Volvo Penta | AQD70BL | 1676432 |
| Volvo Penta | AQD70CL | 1676432 |
| Volvo Penta | AQD70D | 1676432 |
| Volvo Penta | D70B | 1676432 |
| Volvo Penta | D70CHC | 1676432 |
| Volvo Penta | D70CRC | 1676432 |
| Volvo Penta | MD70B | 1676432 |
| Volvo Penta | MD70C | 1676432 |
| Volvo Penta | TAMD70C | 1676432 |
| Volvo Penta | TAMD70D | 1676432 |
| Volvo Penta | TAMD70E | 1676432 |
| Volvo Penta | TD70B | 1676432 |
| Volvo Penta | TD70CHC | 1676432 |
| Volvo Penta | TD70CRC | 1676432 |
| Volvo Penta | TD70G | 1676432 |
| Volvo Penta | THAMD70B | 1676432 |
| Volvo Penta | THAMD70C | 1676432 |
| Volvo Penta | TiD70G | 1676432 |
| Volvo Penta | TMD70B | 1676432 |
| Volvo Penta | TMD70C | 1676432 |
| Volvo Penta | TAMD71A | 1676432 |
| Volvo Penta | TAMD71B | 1676432 |
| Volvo Penta | TD71A | 1676432 |
| Volvo Penta | TiD71A | 1676432 |
| Volvo Penta | TAMD72A | 1676432 |
| Volvo Penta | TAMD72P-A | 1676432 |
| Volvo Penta | TAMD72WJ-A | 1676432 |
| Volvo Penta | TAMD73P-A | 1676432 |
| Volvo Penta | TAMD73WJ-A | 1676432 |
| Volvo Penta | TAMD74A-A | 1676432 |
| Volvo Penta | TAMD74A-B | 1676432 |
| Volvo Penta | TAMD74C-A | 1676432 |
| Volvo Penta | TAMD74C-B | 1676432 |
| Volvo Penta | TAMD74L-A | 1676432 |
| Volvo Penta | TAMD74L-B | 1676432 |
| Volvo Penta | TAMD74P-A | 1676432 |
| Volvo Penta | TAMD74P-B | 1676432 |
| Volvo Penta | D100A | 1676432 |
| Volvo Penta | D100BHC | 1676432 |
| Volvo Penta | D100BRC | 1676432 |
| Volvo Penta | MD100A | 1676432 |
| Volvo Penta | MD100B | 1676432 |
| Volvo Penta | TD100A | 1676432 |
| Volvo Penta | TD100AHC | 1676432 |
| Volvo Penta | TD100ARC | 1676432 |
| Volvo Penta | TD100CHC | 1676432 |
| Volvo Penta | TD100CRC | 1676432 |
| Volvo Penta | TD100G-87 | 1676432 |
| Volvo Penta | TMD100A | 1676432 |
| Volvo Penta | TMD100C | 1676432 |
| Volvo Penta | TAD730G | 1676432 |
Technical Specs
- Product Type
- Circulation Water Pump Mechanical Seal
- Installation
- Replacement Component for Water Cooling Pump
- Dimensions
- 17.5cm L x 10.0cm W x 2.4cm H
- Weight
- 49.9 g (1.76 oz)
What’s in the Box
- 1 x Mechanical Seal (1676432)
Installation Notes
- Disconnect the battery and close the fuel and water seacocks.
- Drain the coolant from the engine block into a suitable container.
- Loosen the alternator and remove the drive belt(s) from the water pump pulley.
- Carefully remove the hoses connected to the water pump. Be prepared for some residual coolant spillage.
- Unbolt and remove the circulation water pump assembly from the engine block.
- Using a press or appropriate puller, remove the old mechanical seal from the pump housing. Note its orientation.
- Thoroughly clean the seal mounting surface in the pump housing, ensuring it is free of debris or corrosion.
- Carefully press the new mechanical seal into place, ensuring it is square and fully seated. Do not damage the seal faces.
- Reassemble the pump and reinstall it on the engine using a new gasket. Torque bolts to manufacturer specifications.
- Reconnect hoses, reinstall the drive belt(s), and tension them correctly.
- Refill the cooling system, open seacocks, and reconnect the battery.
- Start the engine and check for leaks around the pump. Monitor the engine temperature to ensure proper coolant circulation.
Troubleshooting & FAQ
How do I know if the mechanical seal needs replacing?
The most common sign of a failing mechanical seal is a coolant leak from the weep hole on the water pump housing. You may notice drips or a visible trail of dried coolant. Other symptoms can include a grinding noise from the pump or an overheating engine if the pump bearing fails due to coolant contamination.
Will this fit an engine model not in the compatibility list?
We can only guarantee fitment for the models listed. If your engine is not on the list, do not purchase this part. Cross-reference your pump's OEM part number with our Part Number Matrix to ensure this is the correct replacement seal.
What makes this seal different from the original Volvo Penta part?
This is an aftermarket part designed to function as a direct replacement for the OEM version. It is manufactured to the same specifications for material, dimensions, and durability but offered at a more competitive price point. Performance and longevity are comparable to the original.
How often should this circulation pump seal be replaced?
There is no fixed replacement interval for this seal. It should be replaced whenever the water pump is serviced or rebuilt, or as soon as any signs of leakage are detected. Proactive replacement during major engine overhauls can prevent future failures.
Are any special tools required for installation?
Yes, installation typically requires a hydraulic press or a suitable seal driver/puller set to safely remove the old seal and install the new one without damaging the housing or the delicate seal faces. Improper installation can cause immediate failure.
Can I reuse the old seal if I remove the pump for other maintenance?
No. A mechanical seal should never be reused once it has been removed. The sealing surfaces are precision-lapped and can be easily damaged. Always install a new seal to ensure a leak-free repair.
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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