Cold Air Intake | 6.6L | Chevy/GMC 2500HD/3500HD (17-19)

Boost power and throttle response on your 6.6L Duramax-powered Chevy or GMC heavy-duty with Rough Country's Cold Air Intake System. Designed for 2017–2019 2500HD and 3500HD models, it pulls in cooler air for stronger combustion while shielding the engine from dust and debris.

• Relocated air intake: The air filter sits outside the hot engine compartment, drawing in cooler, denser air for improved combustion and more immediate throttle response.
• Large-diameter tube: A free-flowing cylindrical tube optimizes airflow for quicker, more responsive acceleration compared to the stock air box.
• Premium reusable air filter: High-capacity, washable filter delivers sustained performance with easy maintenance and reduced ongoing costs.
• Comprehensive compatibility: Specifically designed to fit 2017–2019 Chevrolet and GMC 2500HD/3500HD with 6.6L engines, ensuring a secure, reliable fit.
• Simple installation: Engineered for a straightforward install with minimal tools and downtime, backed by clear instructions.
• Durable construction & warranty: Built to withstand daily driving with a Limited Lifetime Warranty for long-term peace of mind.

This cold air intake helps your engine breathe easier, producing more horsepower and a more responsive throttle. Cooler air is denser, increasing oxygen in the combustion chamber and enabling more efficient fueling. The reusable filter reduces maintenance costs and waste from disposable filters, and the system's design protects against debris while delivering consistent airflow. It’s an accessible upgrade that complements stock tuning and can improve daily driving feel, towing performance, and overall engine longevity.