The Kubota W21TS10101 is a genuine OEM thermostat designed for a wide range of Kubota engines, including D-series (D722, D902, D905, D1005, D1105, D1305, D1505, D1703, D1803) and V-series (V1505, V1903, V2003, V2203, V2403, V2607, V3300, V3307, V3600, V3800). This essential component ensures precise engine temperature regulation for efficient operation and longevity across various Kubota tractors, excavators, skid steers, loaders, utility vehicles, and mowers. Weighing approximately 0.05 kg, this thermostat is a direct replacement part, crucial for maintaining peak engine performance.