[Jagdpanzer]

Crankcase fumes are not drawn through the cam cover filters but are handled by the PCV system which directs the fumes to the intake plenum via the hose connection just behind throttle body. The cam cover filters are for the fresh air being drawn into the engine from the air horn fittings. As this air has already passed through the main engine air cleaner it appears the cam cover filters could serve more like baffles to prevent the oily mist in the cam box from finding its way upstream into the air horn or for preventing larger objects that may have got around the main engine air cleaner from passing into the cam box.