The Case IH 139138 Ball Joint is a genuine OEM replacement part designed for various Case IH 5100 Series (5120, 5130, 5140) and 5200 Series (5220, 5230, 5240, 5250) tractors, as well as MX Series models (MX100, MX110, MX120, MX135, MX150, MX170). This critical component ensures smooth and precise steering articulation, contributing to optimal vehicle control and safety. Manufactured to Case IH's rigorous standards, it provides durability and reliable performance in demanding agricultural applications.