Infiniti Nissan Genuine Factory Original OEM VALVE COVER GASKET VQ35 350Z / G35 DRIVER SIDE NEW INFINITI / NISSAN OEM FACTORY VALVE COVER GASKET Valve covers on the Nissan / Infiniti VQ35 engines are prone to leaking oil. Often times the covers leak at the gasket and you will notice oil on the edges surrounding the valve cover. Usually, replacing the valve cover gaskets will cure this issue. You should ALWAYS replace the gaskets any time you remove and re-install or install a new valve cover. Genuine NISSAN / INFINITI part