[Vehicle Fitment]: Compatible with Ford Expedition 1997-2002, fit for F-150 1997-2004, fit for F-150 Heritage 2004, fit for F-250 1997 (with Independent Front Suspension), fit for F-250 1998-1999; Compatible with Lincoln Blackwood 2002, Navigator 1998-2002
[Installation Position]: Front Upper Left and Right, Driver and Passenger Side
[Professional Replacement]: This ball joint is replacement for above model's suspension system, and may help you resolve those problems: ① loose or shaky steering ② strange squeaky and clunky noises from suspension ③ uneven tire wear ④ steering wheel drifting to one side !!!!