Looking for an upgrade to your LMM Duramax's air intake system? Check out the S&B 75-5091D Dry Filter Cold Air Intake. This unit is ISO 5011 Filtration Testing approved, meaning it's been thoroughly tested to ensure superior quality and performance. It also features an optional secondary opening for even more airflow, and upgraded silicone connectors for long-term durability. Plus, it won't set off check engine lights for MAP sensors, and is designed to flow cold air in and keep hot air out. Best of all, it comes with a dry disposable filter, so you can simply replace it when necessary. Give your Duramax the power it deserves with the S&B 75-5091D Dry Filter Cold Air Intake.