6.6L Duramax LML Cold Air Intake | 2013-2016 GMC Chevrolet

6.6L Duramax LML High-Flow Cold Air Intake Kit

Upgrade your 6.6L LML Duramax with a high-flow cold air intake kit designed to reduce factory restriction and improve turbo efficiency. Featuring 4-inch aluminum piping and a reusable cotton air filter, this intake system increases airflow, sharpens throttle response, and enhances turbo sound on 2011–2016 GM 2500HD/3500HD trucks.

It's a direct bolt-on solution for owners who want improved induction flow and a more responsive driving feel without complicated modifications.

Vehicle Compatibility

Years: 2013, 2014, 2015, 2016
Make: Chevrolet, GMC
Model: Silverado 2500HD, Silverado 3500HD, Sierra 2500HD, Sierra 3500HD
Engine: 6.6L Duramax Turbo Diesel (LML)

Key Features

• 4" Mandrel-Bent Aluminum Pipe: Rigid aluminum tubing designed to hold shape under boost pressure without collapsing. The full 4-inch diameter supports higher airflow demand on tuned and heavy-load setups.
• Black Powder-Coat Finish: Heat-resistant coating that protects against corrosion and under-hood temps while maintaining a clean, OEM-plus engine bay appearance.
• Reusable High-Flow Cotton Filter: Oiled cotton media captures fine dust without restricting airflow. Washable and serviceable, eliminating the need for frequent paper filter replacements.

Benefits

• Better Pull: Quicker turbo spool and sharper throttle—great for towing or a tuned truck.
• Turbo Sound: Louder, deeper intake tone you'll notice as soon as you get on it.
• All Parts Included: Clamps, couplers, hardware—no runs to the parts store.