The Baldwin PT23257-MPG is a hydraulic filter element. It removes contaminants from hydraulic oil to protect pumps, valves and cylinders. Fits: Hydac Applications. Replaces: Hydac 1277896, 3106934015M O.D.: 3 3/4 (95.2) I.D.: 2 1/4 (57.1) One End Length: 9 7/16 (239.7). Supplied by Rico Europe with fast UK delivery.