Moog K6447 Idler Arm Problem Solver design utilizes a tapered stud to increase stud to bearing contact area by 35%. Increased bearing surface design combined with a controlled preload and pressure plate allows for extra durability. 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 Greaseable socket design allows new lubricant to flush contaminants from the assembly, reducing corrosion and wear Use on 1993 - 1996 GM trucks Use on 2 and 4-wheel drive vehicles Designed as stock replacement Improves chassis performance and durability