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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 versus traditional cover plate designs, providing a more durable and extended life part Exclusive cover plate protects against contaminants leaking into the bearing surface 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 Greaseable socket design allows new lubricant to flush contaminants from the assembly, reducing corrosion and wear