Replacement fits the following models; 4 Cylinder Tractors: 601, 641, 651, 671, 801, 841, 861, 871, 2000, 4000 3 Cylinder Tractors: 2000, 2310, 2600, 2610, 2810, 2910,3000, 3600, 3610, 3910,4000SU, 4100, 4410, 4600SU, 4610SU Industrial Models: 230A, 231, 2110