Full Cold Air Intake Kits

Eliminate intake restriction, lower exhaust gas temperatures (EGTs), and unlock maximum turbo efficiency on your 2004.5–2005 Chevy Silverado or GMC Sierra 2500HD/3500HD with our selection of LLY Duramax complete cold air intake kits. The factory intake on the 6.6L LLY is notoriously restrictive, starving the Garrett variable-vane turbocharger of cold, dense air and contributing to elevated under-hood and coolant temperatures under heavy towing loads. Upgrading to a complete aftermarket cold air intake kit replaces the cramped factory airbox, restrictive ducting, and baffles with an engineered, high-flow enclosed housing, a low-restriction intake tube, and an oversized performance filter. We carry premium enclosed cold air intake systems with your choice of cleanable 8-ply oiled cotton gauze or low-maintenance extendable dry synthetic filters from industry-leading brands like S&B Filters, Banks Power, and aFe Power. Browse our complete 6.6L LLY cold air intake kits below to improve throttle response, increase fuel economy, and keep your Duramax running cool under pressure.