Water Pump Housing, Set – Fits Yamaha Outboard Motors (Replaces 688-44341-00-94)
Water Pump Housing, Set – Fits Yamaha Outboard Motors (Replaces 688-44341-00-94) is backordered and will ship as soon as it is back in stock.
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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.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Water Pump Housing, Set – Fits Yamaha Outboard Motors (Replaces 688...
Product Details
This Water Pump Housing, Set – Fits Yamaha Outboard Motors (Replaces 688-44341-00-94) is a crucial component for the engine cooling system. It securely houses the water pump impeller assembly, which circulates water to prevent the engine from overheating, ensuring reliable performance for compatible Yamaha outboard motors.
This part is a direct replacement for Yamaha OEM part number 688-44341-00-94.
- Designed for direct OEM replacement fit.
- Mounts directly to the lower unit.
- Engineered as a high-quality Yamaha OEM component.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 688-44341-00-94 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 688-44341-00-94 |
Technical Specs
- Product Type
- Water Pump Housing Set
- Installation
- Direct OEM replacement
- Connection
- Lower unit mount
- Dimensions
- 15.0" L x 10.0" W x 3.5" H
- Fitting Type
- Direct mount to lower unit
- Warranty
- Manufacturer warranty
- Other Technical Attributes
- Yamaha OEM component
What’s in the Box
- 1 x Water Pump Housing Set (688-44341-00-94)
Installation Notes
- Disconnect the battery and drain the lower unit's gear lube.
- Remove the propeller assembly.
- Unbolt and carefully detach the lower unit from the engine's midsection.
- Locate the water pump assembly and remove the bolts securing the housing.
- Lift the old housing off the drive shaft, noting the position of all components.
- Clean the base plate and mating surfaces thoroughly.
- Slide the new housing into place over the impeller and driveshaft key.
- Secure the housing with bolts, tightening to the manufacturer's specified torque.
- Reinstall the lower unit, propeller, and refill with fresh gear lube.
- Reconnect the battery and test the engine on a water supply to verify cooling function.
Troubleshooting & FAQ
How do I know if my water pump housing needs replacement?
Signs of a faulty housing include engine overheating alarms, a weak or intermittent water stream from the tell-tale outlet, or visible damage such as cracks, warping, or scoring on the housing itself.
Is this part compatible with my specific Yamaha model?
This part replaces OEM number 688-44341-00-94. It is critical to verify compatibility by checking your engine's model and serial number against your service manual. If you're unsure, consult a qualified marine mechanic.
What is the recommended replacement interval?
It's best practice to inspect the entire water pump assembly, including the housing and impeller, every 100-200 hours of operation or at least once per year. Replace any components that show signs of wear, damage, or fatigue.
Does this set include the impeller or gaskets?
This listing is for the water pump housing set as pictured. Impellers, gaskets, and other water pump service components are typically 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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