Water Pump Impeller – Fits Yamaha 20HP & 25HP (Replaces 6L2-44352-00-00, 18-3065)
Water Pump Impeller – Fits Yamaha 20HP & 25HP (Replaces 6L2-44352-00-00, 18-3065) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
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Water Pump Impeller – Fits Yamaha 20HP & 25HP (Replaces 6L2-443...
Water Pump Impeller – Fits Yamaha 20HP & 25HP (Replaces 6L2-44352-00-00, 18-3065) is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Impeller – Fits Yamaha 20HP & 25HP Outboards (Replaces 6L2-44352-00-00) is engineered for specific Yamaha 2-stroke 20HP (1996–1997) and 25HP (1988–2009) engines, as well as 4-stroke F20 (2018–2021) and F25 (2016–2021) outboard motors.
It serves as a direct interchange for Yamaha 6L2-44352-00-00, Sierra 18-3065, Mallory Marine 9-45613, GLM Marine 89622, SEI Marine 95-499-03G/96-499-03G, OBR Red Rhino YA-111, CEF Marine 500384, and Soxa Marine 17IY008.
- Installation: Installs as a direct replacement for the original part.
- Material: Constructed from durable neoprene rubber and a hardened nylon hub.
- Design: Features a 6-blade design for optimal water flow and cooling efficiency.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Yamaha | 6L2-44352-00-00 |
| Sierra | 18-3065 |
| Mallory Marine | 9-45613 |
| GLM Marine | 89622 |
| SEI Marine | 95-499-03G/96-499-03G |
| OBR Red Rhino | YA-111 |
| CEF Marine | 500384 |
| Soxa Marine | 17IY008 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | - | 20 | 2-Stroke | 1996–1997 | 6L2-44352-00-00 | - |
| Yamaha | - | 25 | 2-Stroke | 1988–2009 | 6L2-44352-00-00 | - |
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F20 | 20 | 4-Stroke | 2018–2021 | 6L2-44352-00-00 | - |
| Yamaha | F25 | 25 | 4-Stroke | 2016–2021 | 6L2-44352-00-00 | - |
Technical Specs
- Product Type
- Water Pump Impeller
- Installation
- Direct Replacement
- Material
- Neoprene Rubber and Hardened Nylon
- Number of Blades
- 6
- Dimensions
- Height: 19.0 mm (0.75 in), Diameter: 52.0 mm (2.05 in), Hub Shaft Diameter: 14.1 mm (0.56 in)
- Weight
- 20 g (0.70 oz)
What’s in the Box
- 1 x Water Pump Impeller (Replaces 6L2-44352-00-00)
Installation Notes
- Disconnect the negative battery cable before starting work.
- Remove the lower unit (gearcase) from the outboard's midsection.
- Locate and unbolt the water pump housing to access the impeller.
- Note the rotational direction of the existing impeller's vanes before removing it from the drive shaft.
- Clean the interior of the housing and the wear plate, inspecting for scoring, warping, or corrosion. Replace if necessary.
- Lightly lubricate the new impeller with marine-grade grease.
- Slide the new impeller onto the drive shaft while turning the shaft clockwise to correctly orient the blades inside the housing cup.
- Reinstall the water pump housing with a new gasket, ensuring bolts are torqued to manufacturer specifications.
- Reattach the lower unit to the engine.
- Reconnect the battery and test the engine in water to verify a strong, steady stream from the tell-tale outlet.
Troubleshooting & FAQ
How do I know if this impeller fits my engine?
This impeller fits specific Yamaha 2-stroke 20HP/25HP and 4-stroke F20/F25 models. Please carefully check your engine model and year against the detailed compatibility tables provided on this page. Cross-reference the part number with your service manual if possible.
What are common signs of a failing water pump impeller?
Key indicators include a weak or no water stream from the engine's tell-tale outlet, engine overheating alarms, steam from the exhaust, or a melted water pump housing. Any of these signs warrant an immediate inspection.
How often should I replace my impeller?
For preventative maintenance, it is recommended to replace the impeller every 1 to 2 years, or every 100 to 200 hours of operation. Frequency should be increased if you operate in saltwater or sandy/silty conditions.
Is this a difficult part to install?
The installation process requires removing the lower unit of the outboard, which can be a complex task. While many boat owners with mechanical experience perform this service themselves, professional installation is recommended if you are not familiar with the procedure.
What is the difference between an OEM and an aftermarket part?
This listing is an aftermarket replacement, not an OEM component. It is built to meet or exceed OEM-level specifications using comparable high-quality materials. Our parts are manufactured in an ISO 9002 certified facility and are batch-inspected for quality and consistency.
How fast is shipping and what does it cost?
We ship worldwide quickly—typical transit time is 5–15 days. Standard shipping is free to most locations. Expedited shipping options, where available, will be presented at checkout.
What is the warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter an issue, 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 condition. See our 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 on the compatibility list—do not order.
- This is an aftermarket replacement part, not an Original Equipment Manufacturer (OEM) component.
- Professional installation is highly recommended to ensure safety, proper function, and engine longevity.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world reliability.
- Fast Global Fulfillment — We offer free standard delivery to most regions, with typical transit times of just 5–15 days.
- Manufacturer-Direct Value — By working directly with our manufacturing partners, we provide fair pricing without compromising on materials or quality control.
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