Water Pump Impeller – Fits Yamaha 8/9.9/15/20 HP Outboard Motors (Replaces 63V-44352-00-00, 63V-44352-01-00)
Water Pump Impeller – Fits Yamaha 8/9.9/15/20 HP Outboard Motors (Replaces 63V-44352-00-00, 63V-44352-01-00) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Water Pump Impeller – Fits Yamaha 8/9.9/15/20 HP Outboard Motors (R...
Water Pump Impeller – Fits Yamaha 8/9.9/15/20 HP Outboard Motors (Replaces 63V-44352-00-00, 63V-44352-01-00) is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Impeller – Fits Yamaha 8/9.9/15/20 HP Outboard Motors is a high-quality replacement part designed for reliable performance in a variety of Yamaha engines. It is compatible with 2-Stroke 9.9 HP (1996–2001) and 15 HP (1996–1998) models, as well as 4-Stroke 8 HP T8 (2002–2009), 9.9 HP T9.9/F9.9 (2005–2021), 15 HP F15/F15C (1998–2021), and 20 HP F20 (2006–2021) outboard motors.
This component serves as a direct replacement for OEM part numbers 63V-44352-00-00 and 63V-44352-01-00, and interchanges with Sierra 18-3040, Mallory 9-45607, GLM 89619, and others.
- Installs directly via press-fit method.
- Constructed from durable, high-quality neoprene rubber for longevity.
- Engineered to meet or exceed OEM specifications for fit and function.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By |
|---|---|---|
| Yamaha | 63V-44352-00-00 | 63V-44352-01-00 |
| Yamaha | 63V-44352-01-00 | |
| Sierra | 18-3040 | |
| Mallory | 9-45607 | |
| GLM | 89619 | |
| SEI Marine | 96-499-03E | |
| OBR Red Rhino | YA-107 | |
| CEF | 500363 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha owners: This impeller fits a wide range of 2-stroke and 4-stroke models from 8 HP to 20 HP. Please verify your specific model and year before ordering.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 2-Stroke | 9.9 | 2-Stroke | 1996–2001 | 63V-44352-00-00/63V-44352-01-00 | Original part superseded by 63V-44352-01-00 |
| Yamaha | 2-Stroke | 15 | 2-Stroke | 1996–1998 | 63V-44352-00-00/63V-44352-01-00 | Original part superseded by 63V-44352-01-00 |
| Yamaha | T8 | 8 | 4-Stroke | 2002–2009 | 63V-44352-00-00/63V-44352-01-00 | Original part superseded by 63V-44352-01-00 |
| Yamaha | T9.9 | 9.9 | 4-Stroke | 2005–2021 | 63V-44352-00-00/63V-44352-01-00 | Original part superseded by 63V-44352-01-00 |
| Yamaha | F9.9 | 9.9 | 4-Stroke | 2005 | 63V-44352-00-00/63V-44352-01-00 | Original part superseded by 63V-44352-01-00 |
| Yamaha | F15 | 15 | 4-Stroke | 1998–2006 | 63V-44352-00-00/63V-44352-01-00 | Original part superseded by 63V-44352-01-00 |
| Yamaha | F15C | 15 | 4-Stroke | 2006–2021 | 63V-44352-00-00/63V-44352-01-00 | Original part superseded by 63V-44352-01-00 |
| Yamaha | F20 | 20 | 4-Stroke | 2006–2021 | 63V-44352-00-00/63V-44352-01-00 | Original part superseded by 63V-44352-01-00 |
| Yamaha | F20A | 20 | 4-Stroke | 2006–2021 | 63V-44352-00-00/63V-44352-01-00 | Original part superseded by 63V-44352-01-00 |
Technical Specs
- Product Type
- Water Pump Impeller
- Installation
- Direct replacement, press fit
- Material
- High-quality neoprene rubber
- Number of Blades
- 6
- Shaft Diameter
- 13 mm
- Overall Diameter
- 52.83 mm
- Height
- 14.22 mm
- Weight
- 14 g (0.03 lbs)
- Color
- Black
- Warranty
- 1 Year (varies by seller)
What’s in the Box
- 1 x Water Pump Impeller (63V-44352-01-00)
Installation Notes
- Disconnect the battery and ensure the engine is off and in neutral.
- Place a drain pan under the lower unit and remove the gear case drain screws to drain the lubricant.
- Remove the bolts securing the lower unit (gear case) to the midsection and carefully drop it down to access the water pump.
- Unbolt and remove the water pump housing cover. Note the rotational direction of the old impeller blades.
- Slide the old impeller off the driveshaft. If it is stuck, carefully cut it away without damaging the shaft.
- Clean the inside of the pump housing and the base plate, removing any debris or corrosion.
- Apply a light coat of marine grease or soap-and-water solution to the new impeller and inside the housing.
- Install the new impeller onto the driveshaft, turning the shaft clockwise to bend the blades in the correct direction.
- Reinstall the water pump housing, ensuring a proper seal, and reassemble the lower unit to the engine.
- Refill the lower unit with the correct gear lubricant before starting the engine.
Troubleshooting & FAQ
How do I know if this impeller fits my motor?
The surest way is to check your engine's model number and year against our compatibility table. If you are unsure, consult your owner's manual or a qualified marine mechanic with your engine details to confirm the correct part number.
What are the signs of a failing water pump impeller?
Common signs include the engine overheating alarm sounding, a weak or non-existent "telltale" stream of water from the outboard, and in severe cases, steam coming from the engine exhaust.
How often should I replace my impeller?
As a preventative maintenance item, most manufacturers recommend replacing the impeller every 1-2 years or every 100-200 hours of operation, whichever comes first. Refer to your service manual for specific intervals.
What is the difference between 63V-44352-00-00 and 63V-44352-01-00?
The part number 63V-44352-01-00 is the official superseded part for 63V-44352-00-00. It is the newer, current version supplied by the manufacturer and is fully interchangeable.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials and manufactured in an ISO 9002 facility, with batch inspections for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free, and expedited options will appear at checkout where available for your location.
Warranty & returns
This product is covered by a 1-year warranty against manufacturing defects under normal use. If any issues arise, please contact our support team with your order details. Returns are accepted within our standard window provided the item is unused and in its original condition. See our full policy page or reach out for instructions.
Safety & Important Info
- Verify images and specifications against your original part before purchase. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement part, not an OEM component.
- Professional installation is recommended for safety and optimal 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 quality control.
Payment & Security
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