Transfer case sealing KIT (MFA RDM)

The most common symptoms are visible oil spots under the rear differential area, a thick layer of grime/oil buildup on the transfer case housing, or a distinct burning smell if the leaking fluid hits the exhaust system. If you see seepage where the shafts enter the unit, the seals need immediate replacement.

Yes, this kit is specifically designed for the MFA (Modular Front Architecture) RDM (Rear Differential Module) used in many Mercedes-Benz compact 4MATIC models like the A-Class, B-Class, CLA, and GLA. Always verify your specific transfer case type before ordering.

Topping up is a temporary fix, but a leak allows contaminants like dirt and moisture to enter the transfer case. This can lead to premature gear wear and expensive internal damage. Replacing the seals with this MFA RDM kit is a much more cost-effective preventative measure.

Installation requires removing the driveshafts to access the seal seats. While it is straightforward for a professional mechanic or an experienced DIYer with the right pullers and seal drivers, we recommend professional installation to ensure the seals are seated perfectly level to prevent future leaks.

This sealing kit is designed to provide the necessary components to seal the shaft ends of the transfer case unit. It is a complete solution for addressing common seepage points on the MFA RDM architecture.