21054149
Ball Socket
Mack

Ball sockets are pivotal joints in heavy trucks where steering linkages or suspension components require frequent angular movement. The ball socket mates with a ball stud to create a pivot that can handle multi‑axis movement while transmitting loads from the steering gear to the wheels. This component is manufactured for heavy‑duty Mack applications, with a forged steel body, a hardened inner bore, and a precision seating surface to minimize play. The bearing interface is designed for long life in dusty, wet, and heat‑exposed environments and accepts grease lubrication for low friction operation. Properly installed, the socket provides smooth articulation and helps prevent binding that can cause wandering or poor steering feel. Regular inspection should check for looseness, wear on the ball or socket bore, and cracking in the housing. If wear is detected, replacement is critical to restore steering precision and safety at highway speeds or during evasive maneuvers. Source One Parts Center.