Where do I find the PCV valve on the 4.4L?
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2004 BMW X5 Question: PCV location
Answer #1ZeeTech October 01, 2010, 22:13Master
They are on the top of the valve cover, there is one on both banks. They are about a 3" diameter round plastic part, the replacement comes with the top, diaphragm and the spring. Replace them in the same time. If the diaphragm cracks / brakes it will suck oil into the intakes.