Water Pump Housing – Fits Yamaha 40-60 HP Outboards (Replaces 6H3-44311-00-00)
Water Pump Housing – Fits Yamaha 40-60 HP Outboards (Replaces 6H3-44311-00-00) 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 aftermarket Water Pump Housing – Fits Yamaha 40-60 HP Outboards (Replaces 6H3-44311-00-00) is engineered for a variety of Yamaha 2-stroke and 4-stroke outboard engines in the 40 to 60 HP range. As a critical part of the cooling system, it ensures consistent coolant circulation to prevent engine overheating and maintain performance.
This component is a direct replacement, providing an interchange for Yamaha OEM part number 6H3-44311-00-00.
- Installs as a direct OEM-equivalent replacement.
- Manufactured from durable, high-grade plastic to withstand marine conditions.
- Functions as a core part of the water pump assembly that directs coolant through the engine.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 6H3-44311-00-00 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. |
|---|---|---|---|---|---|
| Yamaha | F40 | 40 | 4-Stroke | 6H3-44311-00-00 | |
| Yamaha | F50 | 50 | 4-Stroke | 6H3-44311-00-00 | |
| Yamaha | F60 | 60 | 4-Stroke | 6H3-44311-00-00 | |
| Yamaha | 40 | 40 | 2-Stroke | 6H3-44311-00-00 | |
| Yamaha | 50 | 50 | 2-Stroke | 6H3-44311-00-00 | |
| Yamaha | 60 | 60 | 2-Stroke | 6H3-44311-00-00 |
Technical Specs
- Product Type
- Water Pump Housing
- Installation
- Direct OEM replacement
- Housing Material
- Plastic
- Product Dimensions
- 4.0 in H x 8.1 in W x 7.8 in L
- Other Technical Attributes
- Part of the water pump cooling system that directs coolant through the engine
What’s in the Box
- 1 x Water Pump Housing (6H3-44311-00-00)
Installation Notes
- Disconnect the negative battery cable for safety.
- Place the outboard motor in an upright position and drain the lower unit gear oil.
- Remove the lower unit (gearcase) from the engine's driveshaft housing.
- Locate and unbolt the existing water pump housing.
- Carefully lift the old housing, noting the orientation of the impeller and keyway.
- Thoroughly clean the mating surfaces and inspect the impeller, gaskets, and wear plate, replacing them if they show signs of wear or damage.
- Install the new water pump housing, ensuring a secure and correct fit.
- Reassemble all components in the reverse order of removal, applying the manufacturer-specified torque to all fasteners.
- Refill the lower unit with the correct type and amount of marine gear oil.
- Reconnect the battery and test the engine in water, verifying a strong, steady stream of water from the tell-tale port.
Troubleshooting & FAQ
How do I confirm this housing fits my specific engine model and year?
This housing fits a wide range of Yamaha 40-60 HP outboards. The most reliable method is to cross-reference the OEM part number 6H3-44311-00-00 with your engine's service manual or by visually comparing your old part to the images provided. While your model may be listed, slight variations can exist between years.
What are the common signs of a failed water pump housing?
A cracked, warped, or melted housing can cause reduced water pressure and overheating. Key indicators include an engine overheat alarm, a weak or non-existent water stream from the tell-tale port, or visible damage and distortion on the housing itself.
Should I replace the impeller and gaskets at the same time?
Absolutely. It is highly recommended to install a complete water pump rebuild kit—which includes a new impeller, gaskets, O-rings, and wear plate—anytime the housing is replaced. This ensures all components are new and function correctly as a system.
Is this plastic housing as durable as the original OEM part?
Yes. This component is made from high-quality polymers engineered to meet or exceed original equipment manufacturer (OEM) specifications for heat resistance, dimensional stability, and durability in a marine environment.
What is the difference between OEM and aftermarket parts?
This listing is for an aftermarket replacement, not an original equipment manufacturer (OEM) part. It is built to the same specifications using comparable materials and manufactured in an ISO 9002 certified facility. All parts are batch-inspected to ensure quality and consistency.
How fast is shipping?
We ship worldwide quickly, with typical transit times of 5–15 days for most destinations. Standard shipping is free. Expedited shipping options, if available for your location, will be presented at checkout.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects when used under normal conditions. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and in their original packaging. Please see our policy page or contact us 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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