Abstract: An axle housing assembly includes a cast iron tube having a pocket that is formed proximate a first end of the cast iron tube. The pocket is disposed generally transverse to a longitudinal axis of the cast iron tube. The axle housing assembly also includes an insert made of steel connected to the pocket. The steel insert permits the cast iron tube to be coupled to a cast iron carrier housing by welding steel plugs positioned in the carrier housing to the steel inserts.

Abstract: An axle shaft assembly for a motor vehicle has a bearing unit, an axle shaft, and a bearing retainer. The axle shaft is supported within the wheel bearing unit. The axle shaft has an outer diameter. The bearing retainer is mounted on the axle shaft and abuts the wheel bearing unit. The bearing retainer has a piloting feature for aligning the bearing retainer with respect to the axle shaft. The piloting feature includes a pilot surface with an inner diameter approximately equal to the outer diameter of the axle shaft.