[cwl1979]

Any truck repair shop should have it on the shelf. Its threaded on both sides one is very course and the outside is fine. other things i see wrong with your post are... they should not have pulled the axle and should have pulled the driveline. when the axle goes back into the housing it needs a new gasket or its going to be a mess. once the axle has been removed you will need to replace the lost fluid. that will require getting under your coach and filling it with quart bottles until full. each outer hub should hold close to 1 qt to keep the bearings lubed. If you can pull the one that's buggered up it really shouldn't leak much while you hunt one down. Oh and most of the "crush washers are on upside down.