Search:

Here is a scan from the '48 2WD/4WD Truck Parts Manual. It's a fairly conventional I-Beam axle.

If the truck is a 2WD truck, the original serial number would have been 2T XXXXX. As GMWillys says, Willys pickups trucks of the 46 - 51 era had serial numbers with 2T or 4T prefixes. "4WD" was...