Moog 8598 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 select Ford 1978 - 1993 vehicles Spring size: Inside Diameter 3.5", Bar Diameter .64", Installed Height 11" Load rating: 1660 lbs. One square and one tangential end All coil springs meet or exceed OEM (original equipment manufacturers) standards