Replacement impeller for MerCruiser Bravo I, II, II 1988 and newer For 50 years Sierra has been producing parts engineered to meet or exceed the specifications of marine engine manufacturers and has gained the confidence of engine manufacturers and boat builders to a point of supplying them with OEM parts. Boaters and technicians can be assured a Sierra part will fit right the first time and restore function to OEM specifications. Sierra impellers are designed and packaged to make replacement simple. Each impeller fits like an OEM part and includes a gasket and wear place to restore the seal. We recommend having a spare kit for unexpected failures caused by debris or clogged intakes.