The John Deere AM137999 is a genuine OEM ball joint designed for various John Deere compact utility tractors. This critical steering and suspension component ensures smooth articulation and reliable connection between the control arm and steering knuckle, maintaining proper wheel alignment and handling. Manufactured to John Deere's rigorous standards, it provides durability and precise fitment for models including 1023E, 1025R, 1026R, 2025R, 2026R, 2032R, 2036R, 2038R, 3032E, 3038E, 3039R, 3045R, 3046R, 4044R, 4049R, 4052R, 4066R, 4044M, 4049M, 4052M, 4066M, 4M-044, 4M-049, 4M-052, 4M-066, 4R-044, 4R-049, 4R-052, and 4R-066 series.