Water Pump Outer Plate – Fits Parsun/Hidea/Yamaha 9.9HP-15HP 2-Stroke (Replaces 63V-44323-00)
Water Pump Outer Plate – Fits Parsun/Hidea/Yamaha 9.9HP-15HP 2-Stroke (Replaces 63V-44323-00) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Water Pump Outer Plate – Fits Parsun/Hidea/Yamaha 9.9HP-15HP 2-Stro...
Water Pump Outer Plate – Fits Parsun/Hidea/Yamaha 9.9HP-15HP 2-Stroke (Replaces 63V-44323-00) is backordered and will ship as soon as it is back in stock.
Product Details
This Stainless Steel Outer Plate is a direct replacement component for the water pump assembly on Parsun, Hidea, and Yamaha 9.9HP and 15HP 2-stroke outboard motors. It is specifically designed for Yamaha models from 1996 and newer, ensuring a precise fit for maintaining your engine's cooling system.
It serves as a direct interchange for Yamaha part number 63V-44323-00, as well as equivalent parts from Parsun and Hidea, simplifying your search for the right component.
- Direct replacement for simplified installation in the lower unit's water pump assembly.
- Constructed from durable stainless steel for enhanced longevity and corrosion resistance in marine environments.
- Engineered for use with gasoline outboard motors.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 63V-44323-00 |
| Parsun | 63V-44323-00 |
| Hidea | 63V-44323-00 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This part fits a wide range of Yamaha 9.9HP and 15HP 2-stroke models from 1996 through 2006 and beyond. It is also compatible with various Parsun and Hidea 15HP 2-stroke models.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 15ELHU | 15 | 2-Stroke | 1996 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 15ELRU | 15 | 2-Stroke | 1996 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 15ESHU | 15 | 2-Stroke | 1996 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 15MLHU | 15 | 2-Stroke | 1996 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 15MSHU | 15 | 2-Stroke | 1996 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 9.9ELHU | 9.9 | 2-Stroke | 1996 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 9.9ELRU | 9.9 | 2-Stroke | 1996 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 9.9ESHU | 9.9 | 2-Stroke | 1996 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 9.9MLHU | 9.9 | 2-Stroke | 1996 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 9.9MSHU | 9.9 | 2-Stroke | 1996 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 15ELHV | 15 | 2-Stroke | 1997 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 15ESHV | 15 | 2-Stroke | 1997 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 15MLHV | 15 | 2-Stroke | 1997 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 15MSHV | 15 | 2-Stroke | 1997 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 9.9ELHV | 9.9 | 2-Stroke | 1997 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 9.9ELRV | 9.9 | 2-Stroke | 1997 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 9.9ESHV | 9.9 | 2-Stroke | 1997 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 9.9MLHV | 9.9 | 2-Stroke | 1997 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | 9.9MSHV | 9.9 | 2-Stroke | 1997 | 63V-44323-00 | Water Pump Repair Kit 2 |
| Yamaha | Various 9.9/15HP | 9.9–15 | 2-Stroke | 1998–2006+ | 63V-44323-00 | Compatible with numerous Yamaha 2-stroke models |
| Parsun | 15HP Models | 15 | 2-Stroke | 63V-44323-00 | Direct replacement | |
| Hidea | 15HP Models | 15 | 2-Stroke | 63V-44323-00 | Direct replacement |
Technical Specs
- Product Type
- Water Pump Outer Plate
- Installation
- Direct replacement
- Application
- For water pump assembly in lower unit
- Fuel Type
- For gasoline outboard motors
- Housing Material
- Stainless steel
- Dimensions
- 0.39 × 0.39 × 0.39 inches (9.9 × 9.9 × 9.9 mm)
- Weight
- 1.76 ounces (0.05 kg)
- Warranty
- Voluntary 30-day return guarantee
What’s in the Box
- 1 × Stainless Steel Outer Plate (Replaces 63V-44323-00)
Installation Notes
- Disconnect the battery and spark plug wires for safety.
- Place the outboard motor in a secure, upright position. Drain the gearcase oil.
- Remove the propeller and unbolt the lower unit (gearcase) from the upper leg.
- Carefully lower the gearcase to expose the water pump assembly on top of the driveshaft.
- Unbolt and remove the water pump housing and old components, including the existing outer plate.
- Clean all mating surfaces thoroughly.
- Install the new stainless steel outer plate, ensuring it is correctly seated.
- Reassemble the water pump with the other new or inspected components (impeller, gasket, etc.).
- Reinstall the lower unit, refill the gearcase oil, and reconnect the battery and spark plugs.
- Test the engine on a water supply (flushing muffs or in the water) to verify correct water circulation from the tell-tale outlet.
Troubleshooting & FAQ
How do I know if this outer plate will fit my specific engine model?
The most reliable method is to check your engine's model, year, and horsepower against our compatibility table. You can also match the OEM part number 63V-44323-00 from your engine's service manual or by inspecting the existing part.
What are common signs that my water pump outer plate needs replacement?
Signs of a failing water pump system include a weak or non-existent water stream from the "tell-tale" outlet, engine overheating alarms, or visible damage like warping, scoring, or corrosion on the plate itself during an inspection.
Can I replace just the outer plate, or should I get a full kit?
While you can replace just the plate, it is best practice to inspect the entire water pump assembly, especially the rubber impeller, gaskets, and cup. For a complete service, we recommend a full water pump repair kit, as other components often wear out at a similar rate.
What causes this part to fail?
Failure is typically caused by normal wear over time, abrasive particles (sand, silt) in the water, or damage from a disintegrated impeller. Running the engine out of water, even briefly, can quickly destroy the impeller and damage the plate and housing.
Is any special sealant needed during installation?
Generally, a light coat of marine-grade grease on the gaskets and surfaces can aid in sealing and future disassembly. However, you should always follow the specific instructions outlined in your engine's official service manual.
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.
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