Warn locking hubs are some of the most reliable and robust components that were offered on OEM Dana 60 axles. They function for many years with minor maintenance. Two things that make service and longevity difficult is a torn O ring which allows moisture to enter the wheel bearings and the allen bolts which corrode and seize in place. This is a handy kit to upgrade your hubs!
O rings are the correct square profile, oil resistant. Allen bolts are stainless steel!