The Kubota W21TSS1950 is a genuine OEM thermostat designed to maintain the correct operating temperature in a wide range of Kubota agricultural and utility machinery. This essential engine component ensures efficient performance and prevents overheating or undercooling, contributing to the longevity of the engine. It is a direct replacement part for many Kubota B-series, BX-series, F-series, G-series, GR-series, K-series, KX-series, RTV-series, U-series, and ZD-series models.