Complete kit makes fast work of impeller changes and gets you on the water sooner Impellers are the heart of an engine s cooling system. Regular inspection and replacement of the impeller keep your Suzuki s cooling system running in top form. Running through silty or sandy water or running a pump dry can quickly ruin an impeller and cause the engine to overheat. Sierra makes changing impellers easy by packaging kits with all the necessary parts. Each kit includes an impeller, impeller plate, impeller key and gasket. Every Sierra part is engineered to meet or exceed manufacturer s specifications to ensure boaters and technicians of fit and function. Having a spare kit can save the day in the event of an unexpected failure.