EVIL ENERGY Cold Air Intake Compatible for 2001-2004.5 Chevy Silverado/GMC Sierra 2500HD 3500 6.6L V8 LB7 Duramax, Includes Heat Shield & Pre-Filter, Black

Unlock the LB7 Duramax's potential with a high-flow cold air intake engineered specifically for the 2001-2004.5 Chevy Silverado and GMC Sierra 2500HD/3500 6.6L diesel. Bolt-on installation, steel heat shield, and washable synthetic filter included.

Key Features

• Precision Vehicle Fitment: EVIL ENERGY cold air intake compatible for 2001-2004.5 Chevy Silverado 2500HD/3500 and GMC Sierra 2500HD/3500 with the 6.6L V8 LB7 Duramax diesel. Note: 2004 model year requires LB7 engine type — not all 2004 trucks are LB7. Please verify before purchase. Installs in approximately 40 minutes with basic tools.
• Noticeable Power and Torque Gains: Experience quicker acceleration and more responsive power at higher speeds. Enhanced torque improves throttle response and delivers stronger hill-climbing and towing performance — critical for heavy-duty diesel applications.
• High-Efficiency Washable Filter: Multi-layer synthetic non-woven air filter delivers over 98% filtration efficiency while remaining fully washable and reusable. The included pre-filter wrap blocks larger particles and debris, extending service intervals in dusty job-site and off-road environments.
• Optimized Cold Air Delivery: Large-diameter mandrel-bent aluminum intake tube features smooth internal walls and precision bends that eliminate flow restrictions. The steel heat shield isolates engine bay heat, ensuring the intake tract draws cooler, denser outside air for maximum combustion efficiency in the Duramax's high-heat engine bay.
• Aggressive Diesel Intake Note: Hear your LB7 Duramax's true sound with a deeper, more authoritative intake growl and turbo spool under hard acceleration, while maintaining a refined, drone-free cabin at cruising speeds. The perfect balance of diesel performance acoustics and daily-driver comfort.

Precision Fitment for LB7 Duramax HD Trucks

Engineered specifically for the 2001-2004.5 Chevrolet Silverado 2500HD/3500 and GMC Sierra 2500HD/3500 with the 6.6L V8 LB7 Duramax diesel engine. Every bracket, coupler, and mounting point is designed around factory hard points for a direct bolt-on installation — no cutting, drilling, or permanent modifications required. The intake tube follows OE routing paths with optimized bend geometry that clears all factory accessories, intercooler piping, and wiring harnesses. Important: 2004 model year compatibility limited to LB7 engine type only.

High-Flow Cold Air Intake for Diesel Performance

At the core of this system is a large-diameter mandrel-bent aluminum intake tube with smooth internal walls that minimize turbulence and maximize flow velocity — essential for turbocharged diesel engines that demand high air volume. The multi-layer synthetic non-woven cone filter provides over 98% filtration efficiency and is fully washable and reusable — no disposable filters to replace. A durable steel heat shield creates a thermal barrier between the filter element and the engine bay, drawing cooler, denser outside air rather than hot under-hood air. The included pre-filter wrap adds an extra layer of protection for dusty job sites, gravel roads, and off-road conditions.

Complete Kit with Everything Included

Every EVIL ENERGY cold air intake kit ships complete with all components needed for installation: aluminum intake tube, multi-layer synthetic air filter, pre-filter wrap, steel heat shield, high-temperature silicone couplers, stainless steel worm-gear clamps, and all required mounting brackets and hardware. A detailed installation guide walks you through the process. Backed by a 12-month manufacturer warranty against defects in materials and workmanship.