Coupling bolt. A threaded rod with a drive head (such as hex, 12 point, torx, etc) on one end used to secure the AWD Coupling Unit to its mounting surface. Bolt for drive shaft. Part cannot be reused/reinstalled. The Bolts which attach the driveshaft Flange yoke to the differential. AWD Unit. Differential Unit. Drive Shaft Yoke. Mount. Prop Shaft Yoke. Included with: Drive shaft, Drive shaft Part cannot be reused/reinstalled, Part cannot be reused/reinstalled drive shaft.