GMC 3500 Performance Air Intake - Sinister Diesel - Duramax LLY - Sinister Blue - `04-`05. Cold air intake for 2004.5–2005 6.6L Duramax LLY, finished in Signature Sinister Blue.

Built from precision CNC mandrel-bent aluminum, this intake smooths airflow and stands up to heat and vibration. The kit includes durable silicone couplers, a long-life reusable cotton filter, and all necessary mounting hardware. Its corrosion-fighting powder coat and drop-in layout let you install with basic hand tools. Designed to improve throttle response and turbo spool-up, it’s a smart upgrade for daily driving, towing, or weekend performance builds.

Features

• CNC mandrel-bent aluminum tube
• Signature Sinister Blue powder coat
• Reusable cotton filter
• Easy drop-in install
• Fits 2004.5–2005 GM 6.6L Duramax LLY

Have questions or want help planning your build? Call us. We offer installation and customization at our Austin, Texas and Los Angeles, California area shops. Texas: 512-982-9393; California: 562-981-6800.

Buying multiple items? Contact us for possible shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov