All States Ag Parts Gas Strut Spring Cylinder Door Case 570LXT 590 580SD 680K 780B 580L 570MXT 580SK 780D 590 Super L 590 Super L 680L 580K 680H 580D 780C 580 Super L 580 Super L 580SE 278326A1 Fits Case Construction & Industrial(s) 570LXT, 570MXT, 580D, 580K, 580L, 580SD, 580SE, 580SK, 580 Super L, 580 Super L (turbo), 590 (turbo), 590 Super L, 590 Super L (turbo), 680H, 680K, 680L, 780B (turbo), 780C, 780D Replaces Case OEM nos 278326A1, F44881 All new, rebuilt and used tractor parts have a 1-year warranty