Collection: 2004.5-2005 Duramax LLY Air Intake Systems

6.6L Duramax LLY Air Intake

Air intake upgrades for the 2004.5–2005 GM 6.6L Duramax LLY. Improved airflow and filtration support the rest of the build. Every part is matched to your truck and the rest of your build.

Air Intake

Cold air intakes, intake manifolds, and filters that improve airflow and filtration as the build progresses.

Compatibility

Organized by confirmed fitment for the 2004.5–2005 GM 6.6L Duramax LLY.

FAQ

Do I need a tune with an air intake?
An intake improves airflow and filtration; pair it with a calibration to realize the gains.