Water Pump Housing – Fits Yamaha F225, F250, F300 4.2L Outboards (Replaces 6CE-44311-01-00)
Water Pump Housing – Fits Yamaha F225, F250, F300 4.2L Outboards (Replaces 6CE-44311-01-00) 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
Product Details
This aluminum alloy Water Pump Housing is a direct-fit replacement for various Yamaha F225, F250, and F300 V6 4.2L outboard engines manufactured between 2010 and 2022. It serves as a crucial component of the cooling system, ensuring proper water circulation to prevent engine overheating.
It directly replaces Yamaha OEM part numbers 6CE-44311-00-00 and 6CE-44311-01-00, guaranteeing a precise fit and function.
- Engineered for direct bolt-on installation on the lower unit.
- Constructed from a corrosion-resistant aluminum alloy for durability in marine environments.
- Features an integrated weep hole to prevent coolant from being trapped if a seal fails, protecting internal components.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number | Superseded By |
|---|---|---|
| Yamaha | 6CE-44311-00-00 | 6CE-44311-01-00 |
| Yamaha | 6CE-44311-01-00 |
Engine & Model Compatibility
Confirm your engine model and year in the table below to ensure accurate fitment.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F225NCB | 225 | 4-Stroke | 2021–2022 | 6CE-44311-01-00 | Lower Casing Drive 1 & 4 |
| Yamaha | F225NCB2 | 225 | 4-Stroke | 2021–2022 | 6CE-44311-01-00 | Lower Casing Drive 1 & 4 |
| Yamaha | F225NCA | 225 | 4-Stroke | 2014–2020 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F225NCA2 | 225 | 4-Stroke | 2020–2021 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F225XB | 225 | 4-Stroke | 2017–2022 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F225XCB | 225 | 4-Stroke | 2021 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F250NCB | 250 | 4-Stroke | 2021–2022 | 6CE-44311-01-00 | Lower Casing Drive 4 |
| Yamaha | F250NCB2 | 250 | 4-Stroke | 2021–2022 | 6CE-44311-01-00 | Lower Casing Drive 4 |
| Yamaha | F250NCA | 250 | 4-Stroke | 2014–2020 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F250NSB | 250 | 4-Stroke | 2022 | 6CE-44311-01-00 | Lower Casing Drive 4 |
| Yamaha | F250NSB2 | 250 | 4-Stroke | 2022 | 6CE-44311-01-00 | Lower Casing Drive 4 |
| Yamaha | F250UCA | 250 | 4-Stroke | 2013–2020 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F250XB | 250 | 4-Stroke | 2019–2021 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F250XB2 | 250 | 4-Stroke | 2021 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F250XCA | 250 | 4-Stroke | 2013–2021 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F250XCB | 250 | 4-Stroke | 2021–2022 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F250XCB2 | 250 | 4-Stroke | 2022 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F250XSB2 | 250 | 4-Stroke | 2020–2022 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F300NCB | 300 | 4-Stroke | 2021 | 6CE-44311-01-00 | Lower Casing Drive 4 |
| Yamaha | F300NCB2 | 300 | 4-Stroke | 2021 | 6CE-44311-01-00 | Lower Casing Drive 4 |
| Yamaha | F300NCA | 300 | 4-Stroke | 2015–2021 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F300NCA2 | 300 | 4-Stroke | 2018–2021 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F300NSB2 | 300 | 4-Stroke | 2020 | 6CE-44311-01-00 | Lower Casing Drive 4 |
| Yamaha | F300NSB7 | 300 | 4-Stroke | 2020 | 6CE-44311-01-00 | Lower Casing Drive 4 |
| Yamaha | F300UCA | 300 | 4-Stroke | 2013–2020 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F300USB | 300 | 4-Stroke | 2022 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F300USB2 | 300 | 4-Stroke | 2022 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F300XA | 300 | 4-Stroke | 2017–2021 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F300XCA | 300 | 4-Stroke | 2013–2021 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F300XCB | 300 | 4-Stroke | 2021 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F300XCB2 | 300 | 4-Stroke | 2021 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F300XSB | 300 | 4-Stroke | 2020–2022 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | F300XSB2 | 300 | 4-Stroke | 2020 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | VF200XA | 200 | 4-Stroke | 2016–2020 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | VF200XB | 200 | 4-Stroke | 2021–2022 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | VF250XA | 250 | 4-Stroke | 2015–2021 | 6CE-44311-01-00 | Lower Casing Drive 1 |
| Yamaha | VF250XB | 250 | 4-Stroke | 2021 | 6CE-44311-01-00 | Lower Casing Drive 1 |
Technical Specs
- Product Type
- Outboard Water Pump Housing
- Housing Material
- Aluminum alloy
- Housing Color
- Silver/metallic
- Installation
- Direct OEM replacement
- Connection
- Direct mount to lower unit
- Fitting Type
- Bolt-on with O-ring seals
- Dimensions
- 14.0" L x 11.2" W x 7.9" H
- Warranty
- Standard OEM parts warranty
- Other Attributes
- Features weep hole to prevent coolant from being trapped if seal fails
What’s in the Box
- 1 x Water Pump Housing (6CE-44311-01-00)
Installation Notes
- Disconnect the negative battery terminal for safety.
- Drain the gear lube from the lower unit completely.
- Remove the lower unit from the outboard engine assembly.
- Unbolt and carefully detach the old water pump housing.
- Thoroughly clean the mating surfaces of any old gasket material or corrosion.
- Inspect the impeller, wear plate, and seals; replace if showing signs of wear or damage.
- Install the new water pump housing, ensuring all seals and gaskets are correctly positioned.
- Tighten the housing bolts to the manufacturer's recommended torque specifications.
- Reinstall the lower unit onto the outboard.
- Refill the lower unit with fresh, manufacturer-specified gear lube.
- Reconnect the battery, supply cooling water to the engine, and test run to check for proper water flow and leaks.
Troubleshooting & FAQ
How do I confirm this housing fits my specific engine model?
To ensure a perfect match, check your engine's model number and year against the comprehensive "Engine & Model Compatibility" table provided on this page. Cross-referencing these details is the most reliable way to verify fitment.
What are common signs that my water pump housing needs replacement?
Key indicators include engine overheating alarms, a weak or inconsistent water stream from the tell-tale outlet, visible cracks or corrosion on the housing, or signs of water leaking from the pump seams.
How often should the water pump assembly be serviced?
As a best practice, the entire water pump assembly, including the impeller and housing, should be inspected annually. It is recommended to replace the impeller every 100-200 operating hours or at least every two years, regardless of hours, to ensure reliability.
Is this a complete water pump repair kit?
No, this listing is for the water pump housing only. Other components such as the impeller, wear plate, gaskets, and seals are sold separately or as part of a complete water pump repair kit.
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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