Restore a MerCruiser sterndrive water pump to ship-shape. Cooling systems help maintain engine temperature and are critical to the best performance and efficiency. The water pump is at the heart of that system; if it isnt operating to its potential, you are not getting the most of your engine. Sierra water pump kits are an out of the box way to restore optimum function to a MerCruiser sterndrives water pump. Each kit is designed and packaged to eliminate extra time spend gathering individual water pump service parts and includes everything needed to restore the water pump to factory specifications. Sierra engineers every part to meet or exceed factory specifications to ensure fit and function. Boaters and technicians can be assured the part will fit and restore function to OEM specs. Key Features Kit components are engineered to meet or exceed OEM specifications Inclusive kit eliminates time spent sourcing individual parts Replaces MerCruiser p/n 46-72774A89Fits Bravo drives with pumps with 2 piece housing The Sierra Engine Parts Selector In addition to water pump kits, 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