Water Pump Housing – Fits Yamaha 2-Stroke Outboards (Replaces 688-44311-01-00)
Water Pump Housing – Fits Yamaha 2-Stroke Outboards (Replaces 688-44311-01-00) 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 aftermarket Water Pump Housing is a key component of the cooling system water pump assembly, designed to fit a variety of Yamaha 2-Stroke outboard models.
It serves as a direct replacement for Yamaha OEM part number 688-44311-01-00.
- Designed for a direct OEM replacement installation.
- Made from durable plastic to withstand harsh marine environments.
- An essential component of the cooling system water pump assembly.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 688-44311-01-00 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | Various 2-Stroke outboards | 2-Stroke | 688-44311-01-00 | Water pump component |
Technical Specs
- Product Type
- Water Pump Housing
- Installation
- Direct OEM replacement
- Housing Material
- Plastic
- Dimensions
- 6.0" H x 11.25" W x 2.5" L
- Other Technical Attributes
- Component of cooling system water pump assembly
What’s in the Box
- 1 x Water Pump Housing (688-44311-01-00)
Installation Notes
- Disconnect the battery and ensure the engine is off and cool.
- Remove the lower unit (gearcase) from the outboard motor.
- Locate and disassemble the water pump assembly, noting the order of all components.
- Remove the old water pump housing and any gasket remnants.
- Clean all mating surfaces thoroughly before installing the new housing.
- Reassemble the water pump, ensuring all parts are correctly seated.
- Reinstall the lower unit onto the outboard.
- Once assembled, start the engine at idle and confirm a steady stream of water is exiting the tell-tale port, indicating proper pump operation.
Troubleshooting & FAQ
How do I confirm this housing fits my engine?
This housing replaces OEM part 688-44311-01-00. The best way to ensure a match is to verify this part number against your engine's service manual or the original part itself. While it fits various Yamaha 2-Stroke models, confirming the part number is essential for correct fitment.
What are common signs of a failing water pump housing?
A cracked, warped, or melted housing can cause cooling system failure. Symptoms to watch for include a weak or no water stream from the "tell-tale" outlet, engine overheating alarms, and reduced engine performance.
When should the water pump housing be replaced?
It is best practice to inspect the water pump housing every time you replace the impeller (typically every 1-2 years or 100-200 hours). You should replace the housing if you see any signs of warping, cracks, deep scoring, or heat damage.
Is this an original Yamaha OEM part?
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.
How fast is shipping and what does it cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
What is the warranty and return policy?
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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