Moog K6251T Idler Arm 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. Moog engineered steel composition results in a stronger component 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 1979 - 1995 GM vehicles Greaseable for smoother steering Designed as stock replacement Easy to install Improves chassis performance and durability