The Kubota W21CKT3639 is a genuine OEM oil filter designed to provide superior filtration and protection for your Kubota engine. This essential maintenance part ensures optimal engine performance and longevity by effectively removing contaminants from the engine oil. It is compatible with a wide range of Kubota compact tractors (B, L, LX series), utility vehicles (RTV-X series), and zero-turn mowers (ZD, ZG series).