One New Aftermarket Replacement White / Oliver / Mpl Minneapolis Moline 11" Trans Disc For Tractor Models: Super 88 (S/N 6503>), 1550, 1555, 1600, 2-62, 88 (S/N 6503>), 880 (S/N 6503>). 11" Spring Loaded Organic Trans Disc. Spline Diameter: 1.562" Spline Count: 19 Replaces Part Numbers: 161153As, 2870B-4, 2870B-6 All OEM part numbers and logos are to be used for identification purposes only