Circulation Water Pump – Fits Volvo Penta 2.5/3.0/4.0L (Replaces Volvo Penta, MerCruiser, Sierra, Mallory, GLM)
Circulation Water Pump – Fits Volvo Penta 2.5/3.0/4.0L (Replaces Volvo Penta, MerCruiser, Sierra, Mallory, GLM) 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
Circulation Water Pump – Fits Volvo Penta 2.5/3.0/4.0L (Replaces Vo...
Product Details
This aftermarket Circulation Water Pump provides a direct-fit cooling solution for a range of marine engines, including Volvo Penta 2.5L, 3.0L, and 4.0L models (1990–2017), various MerCruiser 3.0L engines, and select GM-based 2.5L–4.0L OMC engines.
It serves as a direct interchange for numerous OEM and aftermarket part numbers, including Volvo Penta 3854017, Sierra 18-3593, MerCruiser 8M0113733, and Mallory 9-42605, ensuring broad compatibility.
- Engineered for direct bolt-on installation.
- Features a durable bronze impeller for reliable performance.
- Covered by a 1-year manufacturer warranty for peace of mind.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 3854017 |
| Volvo Penta | 3858340 |
| Sierra | 18-3575 |
| Sierra | 18-3593 |
| MerCruiser | 8M0113733 |
| MerCruiser | 884727 |
| MerCruiser | 65142A1 |
| Mallory | 9-42605 |
| GLM | 15100 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Volvo Penta engines, this pump fits a wide range of 2.5L, 3.0L, and 4.0L models manufactured between 1990 and 2017.
This pump is compatible with various 3.0L MerCruiser engines. Cross-reference your OEM part number to ensure a match.
Fits select OMC engines that use a GM-based 2.5L to 4.0L block. Please verify your OEM part number.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Volvo Penta | 2.5L | 120 | 4-Stroke | 1990–2017 | 3854017 | |
| Volvo Penta | 3.0L | 130–140 | 4-Stroke | 1990–2017 | 3854017 | |
| Volvo Penta | 4.0L | 165 | 4-Stroke | 1990–2017 | 3854017 | |
| MerCruiser | 3.0L | 130–135 | 4-Stroke | 880817, 884727, 65142A1, 8M0113733 | ||
| OMC | Various GM-based 2.5-4.0L | 110–165 | 4-Stroke | 0509356, 0986779, 3854017 |
Technical Specs
- Product Type
- Circulation Water Pump
- Installation
- Direct bolt-on
- Connection
- Direct drive
- Housing Material
- Aluminum
- Housing Color
- Silver
- Fitting Type
- Bolt flange
- Warranty
- 1 Year (JLM Marine)
- Other Technical Attributes
- Bronze impeller (aftermarket versions)
What’s in the Box
- 1 x Circulation Water Pump (3854017)
Installation Notes
- Disconnect the vessel's battery before beginning work.
- Drain the engine coolant into a suitable container.
- Loosen the alternator and remove the serpentine belt from the water pump pulley.
- Remove the circulation hoses connected to the pump.
- Unbolt and carefully remove the old water pump from the engine block.
- Thoroughly clean the gasket mating surface on the engine, removing all old material.
- Position the new gasket (not included) and install the new circulation pump. Torque bolts to manufacturer specifications.
- Reconnect hoses and reinstall the serpentine belt, adjusting for proper tension.
- Refill the cooling system with the correct type and amount of coolant.
- Reconnect the battery. Start the engine and carefully check for any leaks around the pump and hoses.
Troubleshooting & FAQ
How do I confirm this pump fits my specific engine?
The best method is to match your existing part number to one listed in our Part Number Matrix. You can also use the Engine & Model Compatibility table to verify your model and year, but always cross-reference the part number for accuracy.
What are the signs of a failing circulation water pump?
Common symptoms include the engine overheating at low speeds or idle, visible coolant leaks from the pump's "weep hole," a wobbly or loose pulley, or a grinding/squealing noise coming from the pump assembly.
What is the advantage of a bronze impeller?
This aftermarket pump features a bronze impeller, which is often considered an upgrade over standard stamped steel or composite impellers. Bronze offers superior corrosion resistance and durability, especially in saltwater environments.
At what point should this part be replaced?
Circulation pumps do not have a fixed replacement interval. They are typically replaced when they fail or as part of a comprehensive preventative maintenance overhaul, often recommended every 5–7 years of service.
Do I need to purchase a separate gasket for installation?
Yes, this listing is for the pump only. The required mounting gasket must be purchased separately. Always use a new gasket when replacing a water pump to ensure a proper seal.
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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