Description Pin, front axle. 1.743" O.D., 1.310" I.D., 4" L. Tractors: 9N, 2N (s/n 164489 & up), 8N. This item is a suitable alternative for the following: 2N3126D, 728322, A578195, A-2N3126D, A2N3126D, S.61141, S61141