Will fit 2.64" (67.06mm) radiator neck. Pressure cap is not for short filler neck. Seal diameter 1.96" (49.78mm).Fits Case/International models C, H, HV, M, MD, MDV, MV, Super A, Super A1, Super AV, Super AV1, Super C, Super H, Super HV, Super M, Super MTAReplaces 163361 361705R91