Description Vertical muffler for diesel tractors, fits engines D360, D414n D436. Inlet I.D. 3-3/16", outlet O.D. 3", length 50", oval body. Tractors: 766, 966, Hydro 100. This item is a suitable alternative for the following: 534545R4, 534545R1, 534545R2, 534545R91, A493742, A-534545R1, A534545R1, IH25