The Kubota W21CKT4998 is a genuine OEM thermostat designed to regulate engine temperature in a wide range of Kubota agricultural and utility machinery. This critical component ensures optimal engine performance and prevents overheating by controlling coolant flow. It is compatible with various Kubota B, BX, L, RTV-X, ZD, KX, SVL, and SSV series models, including tractors, utility vehicles, zero-turn mowers, compact track loaders, excavators, and skid steer loaders.