Only for the OM642 3.0L V6 diesel engine 2010-2022 (BlueTec)
These are manufactured by Borg Warner, the OEM supplier to Mercedes Benz. This is the identical unit as those sold at a franchise dealer.
The fan clutch for the 2010 and later engines has an electrically actuated clutch. The earlier 2007-2009 models have a centrifugally actuated declutching mechanism.