The Baldwin PT9529 is a hydraulic filter element. It removes contaminants from hydraulic oil to protect pumps, valves and cylinders. Fits: Komatsu Excavators. Replaces: Komatsu 21U6032210 O.D.: 3 1/4 (82.6) I.D.: 1 5/8 (41.3) Length: 13 1/2 (342.9). Supplied by Rico Europe with fast UK delivery.