Left Mirror Bracket Arm AL77483 Fits John Deere Tractors. 4030 – John Deere (Cab) LH arm Telescopic. 4040 – John Deere (Cab) LH arm Telescopic. 4044M – John Deere (Cab) LH arm Telescopic. 4044R – John Deere (Cab) LH arm Telescopic. 4049M – John Deere (Cab) LH arm Telescopic. 4050 – John Deere (Cab) LH …