Great for seasonal maintenance or to have as a spare for unexpected failures. Impellers are the heart of an engines cooling system. Running through silty or sandy water or running a pump dry can ruin an impeller quickly and cause the engine to overheat. Sierra manufactures impellers that have been engineered to meet or exceed OEM specifications. Boaters and technicians can be assured that a Sierra impeller will fit right the first time and restore function to factory specifications. These impellers are ideal for seasonal maintenance or to have as a spare for unexpected failures. Key Features Impeller is engineered to meet or exceed manufacturer specifications Compatible with Yamaha 8 (2001-02)/9.9/15 (1996-02)/F15 (1998-02) Having a spare can save the afternoon and saves having to make a trip to the parts store. Sierra Part Number 18-3040 Application TableApplicationOEM Part NumberMallory9-45607Yamaha Outboard63V-44352-01-00, 63V-44352-00-00The Sierra Engine Parts SelectorIn addition to impellers, we offer a wide variety of other engine parts manufactured by Sierra. To see if we have the part you need, see ourEngine Parts Selector, where you can search by engine make, serial number and model or year of manufacture.