Brake Slave Cylinder Case 480D 450B 480 580C 855D 850B 580 480C 450 580D 855C 850C 580B 850D 480B 450C A51976 Case IH 4894 4694 4494 Fits Case Construction & Industrial(s) 450, 450B, 450C, 480, 480B, 480C, 480D, 580, 580B, 580C, 580D (less turbo), 850B, 850C, 850D, 855C, 855D Replaces Case OEM nos G109413, A51976 Fits Case IH Tractor(s) 4494, 4694, 4894 Rod Length: 2-3/4" Mounting Holes: 1-3/4" Center to Center