Kubota 2970159 Overflow Pipe Assembly

This overflow pipe assembly serves as a critical component within the engine cooling system, directing excess coolant from the radiator top tank or thermostat housing to the coolant reservoir during thermal expansion cycles. It is engineered to withstand continuous exposure to ethylene glycol based coolants at operating temperatures up to 120 degrees Celsius. The assembly typically comprises formed steel tubing sections joined by EPDM rubber hoses and secured with constant tension clamps. It is designed as a direct replacement for Kubota part number 2970159 (also referenced as 29701-5900 or 29 70159 00). Primary application is the Kubota D1105 series vertical water-cooled diesel engines as installed in Carrier CT3-69 and CT3-69TV tracked carriers. Installation requires verification of routing clearance against engine mounts and frame rails.