505240M1 Trunion Pin Support Shim Fits Massey Ferguson 50B 168 178 185 TractorsOne New Aftermarket Replacement Trunion Pin Support Shim that Fits Massey Ferguson Industrial Construction Models: 50B, 50B MKII Also Fits Massey Ferguson Tractor Models: 165 UK, 168, 175 UK (S N 724937), 178 (S N 724937), 185, 188, 265S, 275 UK, 285S, 290, 340, 342, 350, 352, 355, 360, 362, 365, 372, 375, 390, 390T, 398, 399, 565, 575, 590, 675, 690, 698 Dim A (1) 1 29 32" x 2 5 8" Dim B (2) 0. 034" Thick Replaces Part Numbers: 505240M1, 898019M2,