Water Pump Impeller Kit 682-44352-03 for Yamaha 8 9.9 15 HP Outboard Motor 18-3074
Water Pump Impeller Kit 682-44352-03 for Yamaha 8 9.9 15 HP Outboard Motor 18-3074
Product Overview
Water pump impeller kit for Yamaha 8 HP, 9.9 HP and 15 HP outboards, built around a 40.55 mm outside diameter, 6 blade neoprene impeller on a key drive shaft. It is a direct replacement part for Yamaha 682-44352-00, 682-44352-01, 682-44352-02, 682-44352-03 and 682-44352-40, and cross-references Sierra 18-3074. The kit covers the International and Outboard engine families from 1982 through 2006 as listed below. An impeller that has been left standing takes a set at the blades and stops moving water at low speed first, which is why the telltale often still runs at idle while the engine overheats on plane.
Specifications & Attributes
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | Water Pump Impeller Kit |
| Engine Type | Yamaha outboard, 4-stroke and 2-stroke |
| Outside Diameter | 40.55 mm (1.60 in) |
| Inside Diameter | 13 mm (0.51 in) |
| Depth / Height | 22.4 mm (0.88 in) |
| Number of Blades | 6 |
| Shaft Type | Key drive |
| Material | Neoprene rubber |
| Country of Origin | Taiwan |
| Packaging | 15 x 18 x 1 cm (5.9 x 7.1 x 0.4 in) |
OEM Cross Reference
| Brand | OEM Part Numbers |
|---|---|
| Yamaha | 682-44352-00, 682-44352-01, 682-44352-02, 682-44352-03, 682-44352-40 |
| Sierra | 18-3074 |
Compatible Engines
| Yamaha Engine Family | HP | Years |
|---|---|---|
| Yamaha International Engine | 8 HP | 1985-1997, 1999 |
| Yamaha International Engine | 9.9 HP | 1985-1999, 2001-2003 |
| Yamaha International Engine | 15 HP | 1985-1995 |
| Yamaha Outboard Engine | 9.9 HP | 1982-2006 |
| Yamaha Outboard Engine | 15 HP | 1984-1995 |
What's Included
| Component | Qty |
|---|---|
| Impeller | 1 |
| Drive Key | 1 |
| Gasket | 2 |
| Water Seal Damper | 1 |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | Standard |
| Packaging | Sealed retail packaging |
Before You Buy
- Verify your outboard model or serial number before ordering — the 9.9 HP and 15 HP were built across the 1980s and 1990s with more than one pump
- Fit a new key with every impeller; a worn key lets the impeller slip on the shaft and the engine overheats anyway
- Lubricate the impeller with soapy water or glycerine before fitting — never fit it dry or it will burn on first start
- Check the pump housing, wear plate and cup for scoring while the lower unit is apart
- Renew the gear oil at the same time, since the lower unit is already drained and open
- 30-Day Easy Returns
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Boat Owners' Review
Before You Buy
Frequently Asked Questions
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