Kubota 3B291-17300 Reserve Tank Assembly

The Kubota 3B291-17300 Reserve Tank Assembly is a genuine OEM component designed for the cooling system of Kubota M5 series utility tractors. It functions as the coolant expansion and recovery reservoir, maintaining system pressure and preventing coolant loss during thermal cycling. Constructed from high-density polyethylene (HDPE) for resistance to thermal stress and chemical degradation from engine coolant. The assembly includes the tank body, mounting provisions, and integrated hose connections for radiator overflow and recovery lines. Direct replacement for factory-installed unit, ensuring exact fitment and sealing performance.