Moog K6535 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 Fits 1999 GM heavy duty trucks Designed as stock replacement Improves chassis performance and durability Easy to install