Water pump service kit for OMC Cobra sterndrives 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. The kit includes all the parts and gaskets needed to restore the water pump and eliminated the time spent searching for an sourcing the individual components. We recommend having a spare impeller (Sierra p/n 18-3058) for unexpected failures caused by debris or clogged intakes. Key Features Engineered to meet or exceed OEM specifications Kit includes impeller, impeller plate, pump liner, gaskets and O-rings Fits many OMC and Johnson/Evinrude applications 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.ApplicationOEM Part NumberGLM12091Johnson/Evinrude Outboard984461Mallory9-45283OMC Sterndrive984461