This differential gear case assembly fits the Long 460, 2510, 2510DTC, 2510SD, 2510SD-DTC, 2610, 2610DTC, 2610SD, 2610SD-DTC, 2360, 2360DTC, 2460, 2460DTC, 2460SD, 2460SD-DTC, 310, 310C, 310DT, 360, 480, 460DT, 460SD, 460V, 510, 520, 510DT, 2310, 2260, 320, 260C, 610, 610C, 610DT, and 610DTE tractors. Holes for bevel ring are 12mm diameter. Internal bevel and spider pinions are TX15373 and TX15370. Outer casing TX15371. Only replaces differentials using outer bearings with 50mm (RH) and 60mm (LH) inner diameters. See parts manual for details.