Water Pump Impeller Kit – Fits Yamaha 2-Stroke 6-8 HP (Replaces 655-44352-09-00)
Water Pump Impeller Kit – Fits Yamaha 2-Stroke 6-8 HP (Replaces 655-44352-09-00) 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 Kit – Fits Yamaha 2-Stroke 6-8 HP (Replaces 655...
Water Pump Impeller Kit – Fits Yamaha 2-Stroke 6-8 HP (Replaces 655-44352-09-00) is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Impeller Kit is an essential service part for select Yamaha 2-stroke outboard motors. It is engineered for 6 HP and 8 HP engines, including the 6A, P165, and 8A model series, ensuring reliable cooling system performance.
The kit serves as an aftermarket replacement for Yamaha OEM part numbers 655-44352-09-00, 655-44352-09, and 647-44352-00. It also cross-references with aftermarket part HJB-J-655.
- Engineered as a direct replacement for a straightforward installation.
- Constructed from durable, high-quality neoprene to withstand the marine environment.
- Includes the impeller and installation key for a complete service.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 655-44352-09-00 | OEM |
| Yamaha | 655-44352-09 | OEM Superseded |
| Yamaha | 647-44352-00 | OEM Superseded |
| HJB | HJB-J-655 | Aftermarket |
Engine & Model Compatibility
Confirm your engine model and specifications in the table below to ensure accurate fitment.
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| Yamaha | 6A | 6 HP | 2-Stroke | 655-44352-09-00 |
| Yamaha | P165 | 8 HP | 2-Stroke | 655-44352-09-00 |
| Yamaha | 8A | 8 HP | 2-Stroke | 655-44352-09-00 |
Technical Specs
- Product Type
- Water Pump Impeller Kit
- Installation
- Direct replacement
- Material
- Neoprene
- Number of Blades
- 6
- Overall Diameter
- 47.9 mm (1.886 in)
- Shaft Diameter
- 10.9 mm (0.429 in)
- Impeller Height
- 14 mm (0.551 in)
- Weight
- 10g (0.35 oz)
What’s in the Box
- 1 x Water Pump Impeller (Replaces 655-44352-09-00)
- 1 x Installation Key
Installation Notes
- Disconnect the negative battery cable to prevent accidental starting.
- Place the outboard gear shift into the neutral position.
- Remove the lower unit (gearcase) by unbolting it from the engine's midsection. Be prepared to support its weight.
- Locate and unbolt the water pump housing cover to expose the old impeller.
- Remove the old impeller and the drive key from the driveshaft. Clean any debris or corrosion from inside the housing.
- Insert the new drive key into the driveshaft keyway.
- Slide the new impeller onto the driveshaft, rotating the shaft clockwise to fold the vanes correctly into the housing.
- Reinstall the water pump housing and bolts, ensuring a proper seal.
- Re-attach the lower unit to the midsection and secure all bolts to the manufacturer's torque specifications.
- Reconnect the battery, start the engine in water, and verify a strong, steady stream from the tell-tale outlet.
Troubleshooting & FAQ
How do I confirm this impeller fits my specific Yamaha outboard?
This impeller fits Yamaha 6A, P165, and 8A (6-8 HP) 2-stroke models. The most reliable way to confirm fitment is to check the OEM part number (655-44352-09-00) against your service manual or the part number on your existing impeller.
What are the signs of a failing water pump impeller?
Common signs include a weak or intermittent water stream from the tell-tale outlet, engine overheating alerts, or a reduction in overall engine performance. Visible signs on the old impeller include cracked, brittle, or worn-down vanes.
How often should I replace my outboard's impeller?
As a preventative maintenance item, it is recommended to replace the impeller every 1-2 years or every 100-200 hours of operation, whichever comes first. Usage in saltwater or sandy/silty conditions may require more frequent replacement.
Is the small metal key for installation included in this kit?
Yes, this kit includes both the neoprene impeller and the corresponding drive key required for installation on the driveshaft.
Can I install this impeller myself?
While many boat owners perform this maintenance task themselves with basic mechanical skills and tools, we recommend professional installation if you are not familiar with the procedure. Improper installation can lead to engine damage from overheating.
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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