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About This Product

The Ram-Air intake system for the 2027 Duramax 8.3L widens the powerband, sharpens turbo response, and improves fuel economy by improving air mass flow to the turbo. This is made possible by our patented Banks Air Mass Control Module and Crankcase Ventilation Control Modules. Meanwhile, all competitors must retain near stock airflow or risk setting a check engine light.

This Banks Ram-Air®
fits the following vehicles:
_{click to expand}

Chevrolet

Chevrolet Silverado 2500

Chevrolet Silverado 2500 | 8.3L Diesel 2027

Chevrolet Silverado 3500

Chevrolet Silverado 3500 | 8.3L Diesel 2027

GMC

GMC Sierra 2500 HD

GMC Sierra 2500 HD | 8.3L Diesel 2027

GMC Sierra 3500 HD

GMC Sierra 3500 HD | 8.3L Diesel 2027

Banks Ram-Air®

Big-Ass Oiled or Dry Filter, Cold Air Intake System

SKU #42317

2027 Chevy/GMC 2500/3500 6.6L Duramax, L6P

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Banks Ram-Air®

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About This Product

The Ram-Air intake system for the 2027 Duramax 8.3L widens the powerband, sharpens turbo response, and improves fuel economy by improving air mass flow to the turbo. This is made possible by our patented Banks Air Mass Control Module and Crankcase Ventilation Control Modules. Meanwhile, all competitors must retain near stock airflow or risk setting a check engine light.

This Banks Ram-Air®
fits the following vehicles:
_{click to expand}

Chevrolet

Chevrolet Silverado 2500

Chevrolet Silverado 2500 | 8.3L Diesel 2027

Chevrolet Silverado 3500

Chevrolet Silverado 3500 | 8.3L Diesel 2027

GMC

GMC Sierra 2500 HD

GMC Sierra 2500 HD | 8.3L Diesel 2027

GMC Sierra 3500 HD

GMC Sierra 3500 HD | 8.3L Diesel 2027

Banks are engine people. In a world of companies making disparate parts, Banks engineers the entire engine, not just its components. The proof of Banks’ expertise is its list of national championships and world records as well as the biggest military engine contract of the century. Of all the possible options, the U.S. military chose the Banks D866T engine for its high performance and durability. With over 68 years of breakthroughs and patents in high-performance gas and diesel engine development —including turbocharging and drivetrain, Banks has no rival.

Gas & Diesel Performance for Cars, Trucks, Jeeps and Motorhomes
Copyright © 2026, Banks Power. All Rights Reserved.

*Flat-rate Ground Shipping on orders to 48 Contiguous United States only. Excludes new products and oversized packages. Offer valid on select products, some exceptions apply. Prices/Offer subject to change at anytime. Please call for details 800-601-8072

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