1999-2008 GM 1500 Cold Air Intake (75-5157)Description This fully enclosed airbox will protect your filter from dirt and keep the engine heat out. You can keep an eye on your filter and see when it requires cleaning. The snap in lid design allows for quick and screw free access. This kit comes with a massive, highly efficient air filter which results in better performance and protects your engine. The air filter, coupler, lid seal and box plug are all made with Silicone. Silicone is a premium