EVE200-154 / 200-154 - Application Notes * Please Note: 2004 Duramax: VIN eighth digit "2", fits "LLY" engine only Designed specifically for the 2004 Chevy Duramax 6.6L Turbo Diesel "LLY Engine". Our exclusive Filter Adapter tremendously improves airflow directly into the intake system. Another feature is our CAD (Cool Air Dam), which helps to isolate hot air away from the filter and provides a denser airflow charge.