Complete Control Assembly Arm Pre-Assembled With Bushings, Mounts & Ball Joints (When Applicable) - No additional parts or tools required for installation, TOR exclusive USA-engineered metal bearing design enables grease to flow through the bearing to the stud for reduced friction and enhanced strength and stability, Premium cover plate design allows for tighter tolerances vs traditional cover plate designs, providing a more durable and extended life for the control arm, TOR engineered steel composition results in a stronger component. Our full-ball metal stud provides 36 degrees of smooth, consistent, rotational movement resulting in more responsive steering, Full-ball type studs use cold-formed manufacturing to reduce imperfections and hold the tightest of tolerances, Convenient easy access wrench flat allows for the use of a socket for easy installation and removal, Manufactured with CNC tooling, automated grinding and assembly lines for increased consistency, Forged, CNC-machined shell leads to high-quality, precision-made performance and additional strength, Part Reference Numbers : SK620798 BK620798 521-161 524-849 CB14353PR CB15063PR CB14353 CB15063 MS101143 GS101143 CMS101143 CK620798 K620798 RK620798 1341101 2606582 2607051 TK620798