Differential Rebuilding

Differentials with normal wear do not usually require replacement of the ring and pinion gears. Our standard rebuilding includes complete disassembly, thorough cleaning, close inspection of all parts, replacement of all bearings, seals, gaskets, crush sleeve, and lock ring. Our rebuilding includes meticulous attention to correct gear lash, gear contact patterns, precise pre-load of bearings and exact torque specifications. We provide a 2 year/24,000 mile warranty with our rebuilds, but expect them to last well over 100,000 miles.

If you have a limited slip differential, we can also refurbish the limited slip carrier while rebuilding your differential (additional charges apply). As BMW limited slip units wear, the percentage of lock (25%, 40%, etc.) gradually drops off. We can restore your limited slip assembly to original lock, or increase it to 75% for performance applications. The reduction in slippage will lower your differential lubricant and bearing temperatures as well as your lap times!

If you want to change your differential gearing or add a Quaife unit, combining these operations with a rebuild saves you both time and money.

Korman recommends Redline Synthetic Lubricants for your BMW's drivetrain