Moog K9081 Ball Joint An enlarged ball joint receptacle in the control arm can cause a loose ball joint fit. Moog Problem Solver design includes an oversized housing for a more secure fit. Loose or worn chassis parts can lead to premature tire wear An enlarged ball joint receptacle in the lower control arm can cause a loose ball joint fit. Moog Problem Solver design includes an oversized housing for a more secure fit. Greaseable socket design allows new lubricant to flush contaminants from the assembly, reducing corrosion and wear Use on Subaru 1980 - 1994 cars Designed as stock replacement Improves chassis performance and durability Easy to install