Vincos Intake Manifold Gasket Replacement For GMC Sierra Envoy Yukon HUMMER chevy silverado 1500 tahoe 5.3L 6.0L V8 OHV VIN V T MS98016T MIS16340 89060413 MS92211 MS18007 MS4657 MS16340 SEALED WELLIt securely seals the gasket set so that oil leaks will be prevented each time it pools lubricant oil as it goes to the cylinder head's drain back opening. Aside from oil, this gasket also helps prevent the entry of other harmful materials to the valve train. HIGHLY DURABLEIt is highly durable and less prone to breakage. to provide exceptional service life and reliability. WITHSTAND HARSH CONDITIONSAdvanced manufacturing technology ensures durability and optimum operation in higher or lower temperatures. PROFESSIONAL CUSTOMER SERVICEVincos has the professional production technology.We inspected every product before sending out,to ensure you have the best quality product,and the best value.If you have any problem please feel free to contact us.For more effectively helpness, please let us know your car make model and show the issue by pictures .We would take highly attention of your opinions and demands,to improve our products and service for you.Enjoy your shopping time. NOTEThe attachment to the gasket set must be just right-not too tight and not too loose. Any of these two conditions can ruin the gasket's efficiency; consequently, the valve cover itself.