Banks Ram-Air Intake: Duramax Airflow & Power
Why Every Duramax Needs a Banks Ram-Air Intake
Factory diesel airboxes choke engine performance to minimize induction noise under heavy throttle. Open-element cone filters under the hood only ingest hot engine bay air. Hot air destroys power and increases exhaust gas temperatures. Installing a Banks Ram-Air Intake solves this restriction permanently.
Our engineers designed this system to capture cool, pressurized air from outside the engine bay. A giant filter element feeds your turbocharger without creating harmful flow restrictions. Watch the performance breakdown below to see how airflow testing separates Banks from aftermarket competitors.

The Ram-Air intake outperforms stock and competitive intakes with its oversized filter element—largest in its class—delivering superior engine protection. The enclosed housing shields against hot, power-draining air, ensuring maximum airflow for enhanced performance.

Factory air filter housings often restrict airflow, but the Banks Ram-Air Intake features a larger inlet and a ballistic-shaped nose. This innovative design allows the reusable air filter to operate freely, maximizing airflow and unlocking greater power. Whether you’re towing heavy loads or cruising on highways, the Banks Ram-Air Intake ensures optimal engine performance.
How the Banks Ram-Air Intake Lowers EGTs and Boosts Flow
Turbos thrive on dense, oxygen-rich air. When ambient air temperatures rise, engine efficiency drops rapidly. The Banks Ram-Air Intake features a fully enclosed housing that blocks underhood heat soak. Large front inlet scoops capture high-velocity air straight from the grille.
Computer-flow modeling ensures seamless transitions into the mass air flow sensor housing. That precise engineering prevents check engine lights and erratic idle speeds. Furthermore, you can choose between reusable oiled or maintenance-free dry filter media.
Pairing your intake with an iDash Pro gauge lets you track boost and intake air temperature in real time. You will see immediate thermal improvements during towing and hill climbs.
Explore More Duramax Airflow and Performance Upgrades
- Read our complete Intake System Evaluation and aftermarket airflow test results.
- Explore how the Monster-Ram intake upgrade transforms Cummins airflow and power.
- Review our 2024 Duramax MAP sensor relocation kit for cleaner boost readings.
- Check out why iDash Pro Firmware v1.05 unlocks mobile Duramax DPF regens.


