Our cold air intake for the 2004-2005 Chevy / GMC Duramax LLY 6.6L was engineered to minimize air restriction and flows 41.33% better than stock. This k kit comes with a massive, highly-efficient air filter which results in better performance and protects your engine. Available in either 8-layer Cotton Cleanable or Dry Extendable media.it comes with a fully enclosed airbox that protects the filter from dirt and keeps out engine heat. Dry Filter Intakes Feature:

Quicker Acceleration: Reduces Turbo Lag

More Power: custom air box for cool, dense air

Improves Fuel Economy: lower EGT's and air resistance

Guaranteed Engine Protection: tested to the ISO 5011 Filtration Standards

New Dry Filter - No cleaning or oiling

4-layer filter for gas-engine apps, 8-layer filter for diesel apps

Voltage mapped to eliminate check engine lights

All mounting hardware and illustrated instructions included for 30-minute or less install

Clear Lexan lid looks great and makes the filter easy to inspect
Made in U.S.A! **Replacement Filter KF-1035D**