The axle assembly is made up of the axle housing, two tubes with spinning shafts inside them and the removable cover which allows access to the differential. It transfers power from the engine to the wheels and inside it sits the differential and the ring gears and pinions. 4WD sells premium Jeep Dana 30, 35, 44 and 60 axle assemblies by manufacturers such as G2 Axle & Gear and Rubicon Express. 4WD sells factory replacement axle assemblies for trucks by AMC, Chrysler, Ford and others and also carries axle assemblies with the differential included by ARB, Detroit Locker, Eaton Locker and more. To ease installation, 4WD stocks axles assemblies that require no cutting or drilling.