Today I replace a subscriber's valve cover due to a squealing/howling noise coming from the PCV valve on his N55 135i. This DIY will show you how to fix the oil leak on N54/N55 engines by replacing the valve cover gasket as well. Subscribe for more 135i N55 content coming soon. Thank you.
Great OEM Quality Valve Cover with Gasket: [ Ссылка ]
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