Los cuatro pilares de la educacin Pilares de la educacion, Tecnicas 707 98 25350 Arm Cylinder Seal Kit Fits Komatsu MR40MR 1 2. One New Aftermarket Replacement Arm Cylinder Seal Kit for Komatsu Mini Excavators This aftermarket replacement arm cylinder seal kit restores hydraulic integrity to the arm (stick) cylinder on Komatsu compact excavators. Worn or leaking arm cylinder seals cause sluggish stick response, reduced digging force, and hydraulic oil loss this kit provides the seals needed to rebuild the cylinder and return it to full working pressure. Specifications Rod Diameter: 50 mm Bore Diameter: 80 mm Application: Arm (stick) hydraulic cylinder Compatible Models Komatsu Mini Excavators: PC40MR 1, PC40MR 2, PC40MRX 1, PC45MR 1, PC50UD 2, PC50UU 2, PC50UUM 2, PC58SF 1 Replaces Part Number(s): 707 98 25350 New aftermarket replacement part not remanufactured, not used.