This is an authentic replacement bowl drain washer for use with lawn mower engines and other types of lawn and garden equipment. The washer is used to help seal the connection between the float bowl and the bowl drain screw in the engine. Although the washer is made from metal, it may still need to be replaced at some point if it becomes corroded, bent, or otherwise damaged. This would mean that it no longer provides a proper seal and that there could be leaks. Owners should periodically take the time to inspect the bowl drain washer, along with other elements of their machine, and replace them as needed. It may be a good idea to have several of the washers on hand. The genuine OEM replacement bowl drain washer is sold individually. It will work with a range of different types of machines including lawn mowers, snowblowers, pressure washers, and other small engines. Compatible brands include Craftsman, Toro, Tecumseh, Lawn-Boy, MTD, and Briggs & Stratton. Buyers should always be sure they are choosing the correct washers for their needs.