Before buying a new pump, consider your water pump's height as it is vital to the operation of your system. Sierra's 18-2185 Short Water Pump Shaft is a perfect fit for OMC Sterndrive/Cobra. Its made of high-quality bi-metal components. Inertia or friction welding combines the sturdiness of 17-4 PH stainless steel with the quality of 8620 bearings. Designed to withstand the harsh marine environment and today's high horsepower engine needs. Get yours from Sierra, which they're devoted to protecting you and your investment. Key Features: OMC Drive Shaft Crafted using superior materials Meets or exceeds the specifications of the item it replaces. Includes one drive shaft per package Used on a variety of OMC electric shift and Stringer sterndrives Built to your precise specifications Specifications: Brand: Sea Star Solutions SKU: 18-2185 UPC: 030999311863 Weight: 0.97 LBS Unit Of Measure: EA Manufacturer Part Number (MPN): 118-2185 Application: OMC Sterndrive Drive Shaft fitting OMC Sterndrive applications