The mount replaces the stock failure-prone transfer case mount on 4wd Titans. The mount uses replaceable urethane inserts (but should probably not ever need to be replaced). This mount can also be removed without having to pull the cross member (cross member should be removed to get stock mount out though...or the stock studs can be cut as getting the cross member out can be a chore). Note: these same mounts work perfectly on 2005+ 4wd Frontier and Xterras and Pathfinders and Armadas. 

Quote from a customer "this is the best product I've add to my Titan. These should come from the factory"