Moog 7170 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 1974 - 1989 Spring size: Inside Diameter 4", Bar Diameter .812", Installed Height 10.5" Load rating: 1815 lbs. One square and one tangential end All coil springs meet or exceed OEM (original equipment manufacturers) standards