The Kubota K361158803 Reserve Tank, also known as an expansion tank, is a genuine OEM component designed for various Kubota agricultural and utility machinery. This essential part helps manage coolant levels and pressure within the cooling system, preventing overheating and ensuring optimal engine performance. Measuring 100 mm in length, 50 mm in width, and 100 mm in height, and weighing approximately 0.1 kg, it is compatible with a wide range of Kubota models including BX, B, L, MX, RTV-X, and Z series.