Moog K8212 Ball Joint 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. Greaseable socket design allows new lubricant to flush contaminants from the assembly, reducing corrosion and wear Loose or worn chassis parts can lead to premature tire wear Use on 1957 - 1979 Ford vehicles Greaseable for smoother steering Dust boots included Designed as stock replacement Improves chassis performance and durability