This is a genuine replacement flywheel nut that comes from the manufacturer Tecumseh. Nuts are used in various applications in a range of different types of machines. This flywheel nut is made from metal and is used to fasten the engine's flywheel to the crankshaft assembly. It helps to ensure that the connection is tight and that it does not start to come loose during operation. Nuts are a commonly lost part when making repairs on a machine or even during routine maintenance. The flywheel nut could also become corroded or otherwise damaged over years of use. If this happens, owners will want to be sure to replace the nut as soon as possible. Replacement for the flywheel nut tends to be fast and simple. This is an authentic OEM flywheel nut that is sold individually. The nut is a common part and can be used on many different machines. These include lawn mowers, snowblowers, generators, log splitter, wood chippers, pressure washers, generators, tillers, and other small engines. Compatible brands include Briggs & Stratton, Craftsman, Toro, Cub Cadet, Tecumseh, Lawn-Boy, Snapper, MTD, and Simplicity.