I wasnt really thinking bout the housing and the diff in none e locker shafts. What would concern me is if it breaks lose and unloads to that weak side gear it very well could crack it. heck the e locker in the front of my truck was out of a 4runner and when I installed my new gears I checked that gear out and could see the wear line from the shaft. Tho I would love to have an e locker in the rear 2 since im sick of chirping on every turn with this spool im using.