A spare impeller can save the day Raw water cooling pump impellers can be damaged quickly by running a boat through silty or sandy water. Once damaged, cooling water flow is reduced and the chances of the engine overheating increased. Having a fresh impeller onboard can restore function and keep you out on the water. To ensure the proper fit and function, Sierra engineers replacement parts to meet or exceed manufacturers specifications. Each kit is designed to simplify the task of changing the impeller and includes an O-ring to restore the wear plate seal. Having a spare impeller aboard can recover what may have been a lost afternoon. Key Features Engineered to meet or exceed OEM specifications Kit includes impeller and O-ring The Sierra Engine Parts Selector In 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.ApplicationOEM Part NumberVolvo Penta21213660, 3862567, 21951348