The Kubota W21TS10025 is a genuine OEM thermostat designed to regulate engine temperature at 71°C (160°F). This critical component ensures optimal engine performance and prevents overheating or undercooling. It is compatible with a wide range of Kubota engines, including D1005, D1105, D1305, D1503, D1505, D1703, D1803, V1505, V2003, V2203, V2403, and V3307 models, found in various tractors, utility vehicles, and construction equipment.