Description Hydraulic pump, gear type, mounted in center housing. Tractors: 3500, 4000, 4100, 4200, 4400, 4410, 4500 (1965-1975, with independent PTO). This item is a suitable alternative for the following: D0NN600F, 81824183, 850063, A606228, A-D0NN600F, AD0NN600F, DONN600F, S.65382, S65382