A carbon canister filter cap is an essential piece of hardware designed for use with pieces of outdoor lawn and garden power equipment that have small engines, such as lawn mowers, tillers, wood chippers, string trimmers, log splitters, and edgers. It is compatible with products by brands such as Craftsman, Cub Cadet, and MTD. This carbon canister filter cap is an original OEM part sourced directly from the manufacturer, MTD. It is sold individually. The purpose of the carbon canister filter cap is to prevent harmful fumes or chemicals from entering the environment.The replacement or repair process of the carbon canister filter cap should be straightforward, but the user replacing the part should always be sure to wear gloves during any assembly, replacement, or installation processes. The user should also refer to the owner's manual of their equipment and any guiding diagrams that clarify the placement location.