These SPC I.H.C./Navistar torque arm shims (1/32") come six per box and alter thrust angle and toe when placed between the torque arm and the spring hanger. On Navistar applications they can also help center the axle with the frame rails when used on the lateral link. They provide a targeted method for correcting alignment and axle position on compatible Navistar equipment.
SPC Performance TANDEM SHIM-IHC 1/32 (6)