40031460 Dodge AAM 9.25" Front Loaded Standard Open Differential Case '07-'13 68002461AA, 68002461AB, 40028204, 40028203 Casting# - MUST USE THIS Differential Case IF CHANGE GEAR RATIO FROM 3.73 & UP, DOWN TO A 3.42 RATIO IN '03-'06 DODGE AAM 9.25 FRONT AXLES