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Increase your airflow and protect your engine with an SB Cold Air Intake Kit. SB designs tests and manufactures all their intake systems for dramatically more airflow from a quality diesel performance intake every time. Their state-of-the-art engineering production processes insure you get an intake that will perform as advertised. This kit comes with a fully enclosed airbox that protects the filter from dirt and keeps out engine heat. The 2020-21 3.0L Duramax intake kit can be installed by connecting directly to the stock intake tube. For even better performance SB includes an additional intake tube to connect directly to the turbo to maximize airflow. This high quality filter gives noticeable performance gains without having to sacrifice engine protection. This SB intake dramatically increases airflow over your stock intake system and boasts a high filtration efficiency rate. That means the good air gets in and the dirt stays out. SB puts all their cold air intake kits through rigorous ISO 5011 tests to ensure a quality finished product. This cold air intake is not yet CARB California Air Resources Board Exempt but exemption is pending. The new snap-In lid design requires no screws to secure it to the box. This makes installation and inspection quick and easy. The silicone edge trim ensures an airtight seal protecting against unwanted power-robbing engine heat. Patent Pending The air filter coupler lid seal and box plug are all made with silicone. Silicone is a premium rubber that will seal better and last longer. It handles temperatures as high as 400F without cracking or tearing and wont deteriorate over time. SB designed this kit to avoid check engine lights with a properly mapped Mass Air Sensor. As vehicles become increasingly complex SB devotes a huge amount of resources to engineer intakes that will allow your engine to run properly with the stock calibration or with enhanced tuning.