Note, does NOT fit XD, the vans or 2020+ Titans. 
For Titan owners with more than 3" of rear lift, this billet spacer will help prevent premature tranny/transfer case mount failures by pushing the drive shaft back into the tailshaft of the transfercase. Shown wtih 12pt bolts, we no longer use these and have found regular gr8 hardware to hold up better to the environment and is easier to replace if ever needed.