This housing is built to take /strip abuse without the fear of breaking. Our aluminum housing has forged caps and extra beef where it's needed. Most stock differentials use the 3.062" outer diameter bearings #TLM603049 with 1.781" inner diameter.
The aluminum case will save you 20 lbs. over the cast iron version. You should also a new aluminum pinion support while you're at it.
caps torque to 95 ft/lbs.
Installation Tips
Works with 35 and 40 spools. This will not fit a 28 or 31 spool.