This is a breather designed to be used on various types of lawn and garden equipment. The breather is an essential part that is responsible for venting out excess air from the engine's crankcase. If the equipment's engine isn't working as well as it used to, it could be related to a broken or damaged breather. In this situation, the breather will need to be replaced.Replacing the breather will require a socket set, a nut driver, a Phillips head screwdriver, and a set of pliers. Inspecting the breather or making a replacement starts with removing the equipment's muffler. This will give access to the original breather for visual inspection. If it has damage, it should be removed. The new part can be replaced before reassembling the tool.This breather is a genuine OEM replacement part that is sourced directly from the manufacturer. It is sold as an individual component. The breather is designed to fit onto lawnmowers, snowblowers, tillers, generators, and wood chippers manufactured by Briggs & Stratton, Craftsman, Toro, Cub Cadet, Tecumseh, Lawn-Boy, MTD, and Simplicity.