Water Pump Housing – Fits Yamaha F300/F350 V8 Outboards (Replaces 6AW-44311-01-00)
Water Pump Housing – Fits Yamaha F300/F350 V8 Outboards (Replaces 6AW-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 genuine Yamaha Water Pump Housing is a crucial component for the cooling system of Yamaha F300 and F350 V8 4-stroke outboard motors. It ensures proper water circulation to prevent engine overheating, maintaining optimal performance and engine longevity.
It is a direct replacement for Yamaha part numbers 6AW-44311-01-00 and its superseded predecessor, 6AW-44311-00-00, ensuring a perfect fit and function.
- Engineered for direct replacement of the OEM component.
- Essential for maintaining the engine's cooling system.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 6AW-44311-01-00 | |
| Yamaha | 6AW-44311-00-00 | Superseded by 6AW-44311-01-00 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha owners, please verify your engine model and referenced OEM part number to ensure correct fitment.
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| Yamaha | F300 | 300 | 4-Stroke | 6AW-44311-01-00 |
| Yamaha | F350 (V8) | 350 | 4-Stroke | 6AW-44311-01-00 |
Technical Specs
- Product Type
- Water Pump Housing
- Installation
- Direct replacement for OEM component
- Dimensions
- 14.5" L x 11.2" W x 8.0" H
- Other Technical Attributes
- Water pump component for cooling system
What’s in the Box
- 1 x Water Pump Housing (6AW-44311-01-00)
Installation Notes
- Disconnect the battery and ensure the engine is cool.
- Drain the cooling system to prevent spills.
- Remove the lower unit (gearcase) from the outboard motor.
- Unbolt and remove the old water pump housing. Clean the mounting surface.
- Install the new water pump housing, ensuring a correct fit over the impeller and seals.
- Tighten bolts to the manufacturer's specified torque.
- Reinstall the lower unit and connect all linkages.
- Reconnect the battery and test the engine using a water supply (flushing muffs) to check for proper water flow.
Troubleshooting & FAQ
How do I confirm this housing fits my specific Yamaha engine?
This part is confirmed to fit Yamaha F300 and F350 V8 outboards. The most reliable way to verify is to match the OEM part number 6AW-44311-01-00 with your service manual or existing part. While year ranges are broad, matching the part number is key.
What are the signs of a failing water pump housing?
Common signs include engine overheating, a weak or inconsistent stream of water from the tell-tale port, visible cracks or warping on the housing, and water leaks around the pump area. Any of these symptoms warrant an inspection.
Is this a complete water pump repair kit?
No, this listing is for the water pump housing only. It does not include the impeller, gaskets, wear plate, or bolts. These components should be purchased separately if a full rebuild is needed.
How often should the water pump assembly be inspected?
As a general guideline, the entire water pump assembly, including the housing and impeller, should be inspected annually or every 100 hours of use, whichever comes first. Replace components as needed based on wear.
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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