The Banks Ram-Air system features a fully enclosed cold-air housing that helps block out hot engine bay air while drawing in cooler outside air. Its large 7-1/8" outlet and streamlined intake path significantly reduce restriction, allowing the system to flow up to 48% better than stock while improving combustion efficiency.
A massive high-flow filter—available in both oiled and dry options—provides excellent filtration while maintaining strong airflow. The system also includes Banks’ exclusive 5-inch bellows, designed to accommodate engine movement and help prevent component damage over time.
Available Filter Options:
Oiled Filter
High-flow cotton gauze filter designed for maximum airflow and performance. Ideal for those looking to achieve the highest potential horsepower and torque gains.
Dry Filter
Oil-free synthetic filter that offers excellent filtration with minimal maintenance. Perfect for daily drivers and towing applications where ease of service is important.
Key Features:
- Flows up to 48% better than the factory intake
- Increases horsepower, torque, and throttle response
- Fully enclosed air box helps reduce intake temperatures
- Large high-flow air filter for improved airflow and filtration
- Helps lower exhaust gas temperatures (EGTs) and reduce smoke
- Improves fuel efficiency and overall engine performance
- Exclusive flexible bellows design for durability
- Direct bolt-on installation with no major modifications required
The Banks Ram-Air Intake System is a proven upgrade for LBZ Duramax owners looking for increased airflow, improved efficiency, and reliable performance under any driving condition.