Valve Rocker Arm Cover Assemblies
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
The valve rocker arm covers are cast aluminum and use a pre-molded silicon gasket for sealing. Mounted to each rocker cover are the coil and bracket assemblies. Incorporated into the left cover is the oil fill tube and the positive crankcase ventilation (PCV) fresh air passage. Incorporated into the right cover is the PCV system dirty air passage.