Water Pump Impeller – Fits Yamaha 6HP/8HP 2-Stroke (Replaces 655-44352-09-00)
Water Pump Impeller – Fits Yamaha 6HP/8HP 2-Stroke (Replaces 655-44352-09-00) is backordered and will ship as soon as it is back in stock.
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Water Pump Impeller – Fits Yamaha 6HP/8HP 2-Stroke (Replaces 655-44...
Water Pump Impeller – Fits Yamaha 6HP/8HP 2-Stroke (Replaces 655-44352-09-00) is backordered and will ship as soon as it is back in stock.
Product Details
This high-quality Water Pump Impeller – Fits Yamaha 6HP/8HP 2-Stroke Outboards (Replaces 655-44352-09-00) is engineered for specific Yamaha 2-stroke outboard engines. It provides a reliable solution for maintaining the cooling system on 6HP (model 6A) and 8HP (models P165/8A) engines manufactured up to the specified serial number cutoffs.
This component serves as a direct interchange for Yamaha part numbers 655-44352-09-00, 655-44352-09, and 647-44352-00.
- Engineered for a direct OEM replacement fit and function.
- Constructed from durable, marine-grade neoprene rubber for longevity.
- It is recommended to replace the impeller annually or every 100 hours of operation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 655-44352-09-00 |
| Yamaha | 655-44352-09 |
| Yamaha | 647-44352-00 |
| Yamaha | 6474435200 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha owners, please verify your engine's model and serial number against the compatibility ranges listed in the notes to ensure a correct fit.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Yamaha | 6A | 6 | 2-Stroke | 655-44352-09-00 | For short shaft engines up to serial number 00600 |
| Yamaha | 6A | 6 | 2-Stroke | 655-44352-09-00 | For long shaft engines up to serial number 30300 |
| Yamaha | P165 | 8 | 2-Stroke | 655-44352-09-00 | For short shaft engines up to serial number 20160 |
| Yamaha | 8A | 8 | 2-Stroke | 655-44352-09-00 | For short shaft engines up to serial number 20160 |
| Yamaha | P165 | 8 | 2-Stroke | 655-44352-09-00 | For long shaft engines up to serial number 54715 |
| Yamaha | 8A | 8 | 2-Stroke | 655-44352-09-00 | For long shaft engines up to serial number 54715 |
Technical Specs
- Product Type
- Water Pump Impeller
- Installation
- Direct OEM replacement
- Material
- Neoprene rubber
- Number of Blades
- 6
- Dimensions
- Impeller Height: 14mm (0.551 in), Overall Diameter: 47.9mm (1.886 in), Shaft Diameter: 10.9mm (0.429 in)
- Weight
- 10g (0.35 oz)
- Other Technical Attributes
- Recommended replacement interval: Annual or every 100 hours, whichever comes first
What’s in the Box
- 1 x Water Pump Impeller (655-44352-09-00)
Installation Notes
- Disconnect the spark plug leads and battery cables for safety.
- Place a drain pan under the lower unit and remove the gearcase drain screw to empty the oil.
- Remove the mounting bolts securing the lower unit (gearcase) to the engine's midsection and carefully detach it.
- Unbolt and remove the water pump housing to access the old impeller.
- Note the rotational direction of the existing impeller blades before removing it from the drive shaft.
- Thoroughly clean the inside of the pump housing and inspect it for wear, scoring, or cracks. Replace the housing if damaged.
- Slide the new impeller onto the driveshaft. Turn the driveshaft clockwise while applying gentle pressure to help seat the blades correctly within the housing.
- Reinstall the water pump housing, ensuring any gaskets or seals are properly aligned.
- Re-attach the lower unit, refill with fresh gear oil to the correct level, and reconnect the battery and spark plug leads.
Troubleshooting & FAQ
How do I confirm this impeller fits my Yamaha outboard?
This impeller fits specific older Yamaha 6HP and 8HP two-stroke models. The most reliable way to confirm fitment is by checking your engine's model (e.g., 6A, 8A, P165) and its serial number. Refer to the 'Engine & Model Compatibility' table to see if your serial number falls within the specified range.
What are the signs of a worn or failed impeller?
Common symptoms include an engine overheating alarm, a weak or non-existent stream of water from the "tell-tale" outlet port, and steam coming from the exhaust. A damaged impeller cannot circulate enough water to cool the engine, leading to serious damage if ignored.
How often should I replace my water pump impeller?
For preventative maintenance and to ensure engine reliability, we recommend replacing the impeller every year or after 100 hours of use, whichever comes first. This interval can be shorter if you frequently operate in sandy, silty, or shallow water.
What is the benefit of a neoprene impeller?
Neoprene is a robust, flexible synthetic rubber that offers excellent resistance to heat, abrasion, and degradation from oil and chemicals. This makes it an ideal material for marine water pump impellers, ensuring a long and reliable service life.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility and batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit is 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 and specifications against 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 quality control.
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