Water Pump Repair Kit – Fits Volvo Penta MD40, TMD40, TAMD40 Series (Replaces 875769, 21951410)
Water Pump Repair Kit – Fits Volvo Penta MD40, TMD40, TAMD40 Series (Replaces 875769, 21951410) 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
Water Pump Repair Kit – Fits Volvo Penta MD40, TMD40, TAMD40 Series...
Product Details
This is a complete Water Pump Repair Kit – Fits Volvo Penta MD40, TMD40, TAMD40 Series designed to service the raw water pump on various 4-stroke Volvo Penta marine diesel engines from the 40 series, primarily manufactured in the 1980s and 1990s. The kit is specifically for pumps with a 5-screw cover plate and a 95 mm diameter impeller.
It serves as a direct replacement for Volvo Penta part numbers 875769 and 21951410, as well as Sierra 18-3261.
- Enables direct, hassle-free installation.
- Restores cooling system performance and prevents overheating.
- Includes all necessary components for a standard rebuild.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 875769 |
| Volvo Penta | 21951410 |
| Sierra | 18-3261 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Stroke | OEM Part No. |
|---|---|---|---|
| Volvo Penta | D40 | 4-Stroke | 875769, 21951410 |
| Volvo Penta | AD40B | 4-Stroke | 875769, 21951410 |
| Volvo Penta | AQAD40A, AQAD40B | 4-Stroke | 875769, 21951410 |
| Volvo Penta | TAMD40A, TAMD40B | 4-Stroke | 875769, 21951410 |
| Volvo Penta | MD40A | 4-Stroke | 875769, 21951410 |
| Volvo Penta | TMD40A, TMD40B, TMD40C | 4-Stroke | 875769, 21951410 |
| Volvo Penta | AQD40A | 4-Stroke | 875769, 21951410 |
Technical Specs
- Product Type
- Raw Water/Sea Water Pump Repair Kit
- Fitting Type
- Direct fit
- Installation
- Direct replacement
- Dimensions
- 16.0" L x 14.0" W x 2.0" H
- Weight
- 0.5 kg (1.1 lbs)
- Other Technical Attributes
- For raw water/sea water cooling pump; Fits pumps with 5 screws in cover plate & 95 mm diameter impeller
What’s in the Box
- 1 x Complete repair kit components (Replaces 875769, 21951410)
Installation Notes
- Disconnect the vessel's battery and close the raw water seacock.
- Place an absorbent towel below the pump to catch any spills.
- Unscrew the 5 cover plate screws on the water pump.
- Carefully remove the old cover plate, gasket, and impeller. Pliers may be needed.
- Clean the inside of the pump housing, removing any debris or old gasket material.
- Lightly lubricate the new impeller and housing interior with a suitable marine lubricant.
- Install the new impeller, ensuring the blades are oriented correctly for engine rotation.
- Place the new gasket on the housing and secure the cover plate with its screws.
- Re-open the seacock.
- Reconnect the battery, start the engine, and immediately check for leaks and proper water flow.
Troubleshooting & FAQ
How can I confirm this kit fits my specific pump?
The most reliable method is to check your existing pump. This kit is designed for Volvo Penta pumps that have a cover plate secured by 5 screws and contain an impeller with a 95 mm (approximately 3.74 inches) diameter. If your pump matches these two key features, the kit should fit.
What are the signs that my water pump needs a rebuild?
Common symptoms include the engine temperature running higher than normal, a visible water leak from the pump housing, a cracked or brittle impeller found during inspection, or a reduced stream of water from the exhaust outlet.
How often should I service my raw water pump?
As a crucial preventative maintenance task, it is recommended to inspect your impeller annually and replace the full repair kit every 1-2 years or every 100-200 operational hours, whichever comes first, to prevent unexpected failure.
Is it difficult to replace the impeller and seals myself?
The job is straightforward for those with basic mechanical skills and tools. However, improper installation can lead to engine damage. When in doubt, consulting a professional marine mechanic is the safest course of action.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). It's built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, it's 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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