New 2007 BMW X3 3.0si owner. Engine started rough idling, whistling from engine, CEL on, oil cap hard to remove (suction). All of this from what I'm reading points to a PCV valve failure. Only thing I'm finding for replacement parts kit online is:https://www.fcpeuro.com/products/bmw...2281kt#fitment

My question is, is it really true that the PCV valve is integrated into the valve cover and the entire thing needs to be replaced? Seems insane to me but wouldn't be surprised. Thanks in advance.