All States Ag Parts Brake Master Cylinder Case 480 1530B 1740 480B 570 580C 1737 430 580B 580 480C 470 530 L25419 Fits Case Tractor(s) 470, 570 Fits Case Skid Steer Loader(s) 1530B, 1737, 1740 Fits Case Construction & Industrial(s) 430, 480, 480B, 480C, 530, 580, 580B, 580C Replaces Case OEM nos L25419 The mounting bolt holes are on 3-7/16" - 3-1/2" centers, the mounting bolt hole is 3/8" in diameter, the bore is 15/16"