The Kubota W21CKT4972 is a genuine OEM air filter designed to provide superior filtration for various Kubota machinery, including BX, KX, RTV-XG850, Z, and ZD series models. This essential component protects the engine from harmful contaminants, ensuring optimal performance and longevity. With an outer diameter of 90 mm, an inner diameter of 47 mm, and a length of 145 mm, this filter is engineered to precise specifications for a perfect fit and reliable operation.