Description Bushing, front axles, 1.778" I.D., 1.913" O.D., 1.5" L (not for heavy, industrial, or grove axles). Tractors: 9N, 2N, 8N, NAA, 600, 700, 800, 900, 2000, 4000 (1939-1964). This item is a suitable alternative for the following: 2N3039, 180344M1, 180344M91, 87041923, A603688, A-2N3039, A2N3039