Moog 7172 Coil Spring Set Powder-coated to protect against corrosion Designed to lower stresses for longer service life All coil springs are 100% load tested Worn or sagging coil springs can cause premature tire wear due to vehicle misalignment Use on Dodge products from 1971 - 1993 Spring size: Inside Diameter 4", Bar Diameter .828", Installed Height 11" Load rating: 1525 lbs. One square and one tangential end All coil springs meet or exceed OEM (original equipment manufacturers) standards