Moog K3199 Ball Joint Problem Solver design has a larger stud taper diameter; allowing complete contact with the control arm tapered hole for a proper fit. Problem Solver powdered metal gusher bearing design enables grease to flow through the bearing to the stud for reduced friction and enhanced strength and stability. Problem Solver patented cover plate design allows for tighter tolerances vs. traditional cover plate designs, providing a more durable and extended life part. Moog engineered steel composition results in a stronger component Full ball metal stud provides 36 degrees of smooth, consistent, rotational movement resulting in more responsive steering. An enlarged ball joint receptacle in the lower control arm can cause a loose ball joint fit. Moog Problem Solver design includes an oversized housing for a more secure fit. Angled passage in the side of the housing provides easy access to the grease fitting. Designed as original equipment replacement for stock vehicles Greaseable for smoother steering Easy to install All parts meet or exceed OEM (original equipment manufacturers) standards