Function This recovery tank, an additional coolant reservoir, plays a key role in the smooth operation of your excavator by effectively regulating flow within the system. Compatibility Designed specifically for SY 135, 215, 23589 excavator models, this overflow tank provides a precise fit for compatible machines. Performance and durability The overflow bottle features a thick-walled, temperature resistant construction that supports reliable heat dissipation during extended operation, helping to maintain optimal cooling performance over time. Replacement and fit As a replacement overflow bottle, it delivers a perfect fit and easy installation. It is an important excavator part that supports correct alignment, helps prevent overheating and potential engine damage, and contributes to ongoing system reliability. Use scenarios - During routine cooling system maintenance on SY 135, 215, or 23589 machines to restore stable coolant flow and prevent deterioration of cooling efficiency. - In high-load digging or long-duration work in hot environments, to reduce the risk of overheating and protect engine performance. - When replacing a worn or damaged overflow bottle, to ensure compatibility, fit, and reliable operation of the cooling system.