Moog DS905 Tie Rod End 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 select 1977 - 1991 Chevy and GM trucks Left outer rod for 4-wheel drive vehicles Rods are greasable to reduce friction Easy to install All parts meet or exceed OEM (original equipment manufacturers) standards