Water Pump Impeller Kit – Fits Yamaha 9.9/15 HP 2-Stroke & 4-Stroke (Replaces 682-44352-00)
Water Pump Impeller Kit – Fits Yamaha 9.9/15 HP 2-Stroke & 4-Stroke (Replaces 682-44352-00) 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.
International delivery times may vary due to customs processing.
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Water Pump Impeller Kit – Fits Yamaha 9.9/15 HP 2-Stroke & 4-St...
Water Pump Impeller Kit – Fits Yamaha 9.9/15 HP 2-Stroke & 4-Stroke (Replaces 682-44352-00) is backordered and will ship as soon as it is back in stock.
Product Details
This high-performance Water Pump Impeller Kit – Fits Yamaha 9.9/15 HP 2-Stroke & 4-Stroke (Replaces 682-44352-00) is engineered for select Yamaha outboard motors. It provides reliable water circulation for Yamaha 9.9/15 HP 2-Stroke models (1984–1995) and F9.9/T9.9/FT9.9 HP 4-Stroke models (1985–2003).
This impeller serves as a direct cross-reference for various OEM and aftermarket parts, including Yamaha 682-44352-01-00, Sierra 18-3074, and Mallory 9-45605, ensuring broad compatibility.
- Engineered for direct replacement, simplifying installation.
- Constructed from high-grade neoprene rubber for durability and longevity.
- Features a 6-blade design for efficient cooling performance.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Yamaha | 682-44352-01-00 |
| Yamaha | 682-44352-02-00 |
| Yamaha | 682-44352-03-00 |
| Yamaha | 682-44352-40-00 |
| Sierra | 18-3074 |
| CEF | 500320 |
| Mallory | 9-45605 |
| Mariner | 47-84027T |
| Mariner | 47-84027M |
| Mariner | 84027M |
| Mariner | 84027T |
| Mariner | 96619M |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha owners, this part fits a range of 2-stroke and 4-stroke engines from the mid-1980s through the early 2000s.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 9.9D | 9.9 | 2-Stroke | 1984–1995 | 682-44352-01-00 | |
| Yamaha | 15D | 15 | 2-Stroke | 1984–1995 | 682-44352-01-00 | |
| Yamaha | F9.9A | 9.9 | 4-Stroke | 1985–2004 | 682-44352-01-00 | |
| Yamaha | F9.9B | 9.9 | 4-Stroke | 1985–1996 | 682-44352-01-00 | |
| Yamaha | FT9.9 | 9.9 | 4-Stroke | 1985–1990 | 682-44352-01-00 | |
| Yamaha | T9.9 | 9.9 | 4-Stroke | 1985–2003 | 682-44352-01-00 |
Technical Specs
- Product Type
- Water Pump Impeller
- Installation
- Direct Replacement
- Dimensions
- A: 13 mm (0.51 in)
B: 40 mm (1.57 in)
C: 22 mm (0.87 in) - Material
- Neoprene Rubber
- Number of Blades
- 6
What’s in the Box
- 1 x Water Pump Impeller (682-44352-01-00/682-44352-03-00)
Installation Notes
- Disconnect all power sources and ensure the engine is off and cool.
- Position the outboard motor securely on a stand or transom.
- Drain the gearcase oil into a suitable container.
- Remove the bolts securing the lower unit (gearcase) to the midsection.
- Carefully lower and separate the gearcase to access the water pump.
- Unbolt and remove the water pump housing cover.
- Take note of the old impeller’s blade orientation before removing it.
- Clean any debris from the housing interior and inspect for wear or cracks.
- Lightly lubricate the new impeller with marine grease.
- Install the new impeller, turning the driveshaft clockwise to help seat the blades.
- Reassemble the pump housing, reinstall the lower unit, and refill the gearcase with fresh oil.
- Test the engine in water, confirming a steady tell-tale stream.
Troubleshooting & FAQ
How do I know if this impeller fits my specific engine?
This part is designed for the Yamaha and Mariner models listed in our compatibility tables. The most reliable way to confirm fitment is to check your engine’s model, horsepower, and year against the data provided. If you are unsure, visually compare it to your existing part before installation.
What are the signs of a failing water pump impeller?
Common signs include a weak, intermittent, or completely absent water stream from the engine's "tell-tale" outlet. Other symptoms can be engine overheating alarms or a noticeable reduction in cooling efficiency and performance.
How often should I replace the impeller?
As a best practice for preventative maintenance, we recommend inspecting your impeller annually and replacing it every 1-2 years or 100-200 operating hours. Replacement frequency depends heavily on usage conditions, especially in saltwater or sandy/silty environments.
Can I install this myself?
Yes, many boat owners with basic mechanical skills can perform the replacement. However, it requires careful disassembly of the lower unit. If you are not comfortable with the process, we recommend seeking a qualified marine mechanic to ensure correct installation and avoid potential engine damage.
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.
Payment & Security
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