SPC Performance TANDEM SHIM-IHC 1/8 (6) - 35042

These I.H.C./Navistar Torque Arm Shims will change thrust angle and toe when installed between the torque arm and the spring hanger. On Navistar they will also center the axle with the frame rails when used on the lateral link. Six shims per box. California Residents WARNING
Installation Instructions