Cold Air Intake for Chevy Silverado 2500HD/3500 (2004) 6.6L Diesel LB7 Engine

Unleash the full potential of your Duramax and feel the immediate surge of power and responsiveness as your truck breathes freely. Experience smoother acceleration and a deeper, more satisfying growl, transforming every drive into an engaging experience.

Performance Cold Air Intake System for Chevy Silverado/GMC Sierra 2500HD/3500 (6.6L LB7 Duramax)

The stock air intake system in your 2001-2004 Silverado or Sierra 6.6L LB7 Duramax is notoriously restrictive, often choked by convoluted piping and a poorly designed airbox intended more for quiet operation than peak performance. This limitation becomes particularly evident when you’re towing heavy loads, climbing steep grades, or simply trying to merge onto the highway, where your powerful diesel engine struggles to pull in the dense, cool air it craves for optimal combustion.

This high-performance cold air intake system specifically addresses these shortcomings by replacing the entire restrictive factory setup. Engineered to provide a direct, unimpeded path for airflow, it features a custom heat shield that isolates the filter from engine bay heat, ensuring only cooler, denser air reaches your engine. The result is a substantial improvement in throttle response, increased horsepower and torque, and better overall engine efficiency, allowing your LB7 to perform as it was truly meant to.

Why You Need This Upgrade

• Enhanced Power & Torque: Boosts horsepower and torque by up to 10%, giving your heavy-duty truck a noticeable performance edge for towing and daily driving.
• Superior Heat Shielding: Features a dedicated heat shield to effectively block radiant engine heat, ensuring consistent intake air temperatures for maximum power output.
• Improved Fuel Efficiency: Optimizes the air-to-fuel ratio, leading to a more complete and efficient combustion cycle that can translate into better MPG.
• Instant Throttle Response: Eliminates airflow restrictions, providing more immediate and crisper throttle feedback for quicker acceleration.
• High-Flow Filtration: Equipped with a high-flow performance air filter that provides excellent filtration against debris while maintaining maximum airflow.
• Durable Construction: Includes high-velocity induction piping, quality couplers, clamps, and all necessary hardware for a secure and long-lasting installation.

Technical Specifications

Replaces These OEM Applications

Compatible Vehicles:

• 2001-2004 Chevrolet Silverado 2500HD 6.6L V8 Diesel (LB7)
• 2001-2004 Chevrolet Silverado 3500 6.6L V8 Diesel (LB7)
• 2001-2004 GMC Sierra 2500HD 6.6L V8 Diesel (LB7)
• 2001-2004 GMC Sierra 3500 6.6L V8 Diesel (LB7)
• Important Note for 2004 Models: This kit only fits 2004 model year vehicles equipped with the LB7 engine type. To confirm your 2004 Silverado or Sierra is an LB7, check the 8th digit of your VIN; it must be a "1".

Upgrade Your LB7 Duramax Today

Don’t let a restrictive factory airbox hold back your 6.6L LB7 Duramax. Maximize your towing power, acceleration, and fuel efficiency with this performance cold air intake system. Shop with confidence knowing that PerformanceChipTuning.com delivers the best cold air intake parts with fast shipping and expert support for your Chevy Silverado or GMC Sierra.