# Sinister Diesel Cold Air Intake 04.5-05 Chevy / GMC Duramax 6.6L LLY Give a real boost to your truck'performance and save on fuel using this Sinister Diesel Duramax LLY cold air intake. It has been designed, engineered, and fabricated by Sinister Diesel itself, ensuring excellent quality. All kits come with silicone couplers designed for durability, plus all mounting hardware., Use this cold air intake for your Chevy or GMC 2004.5-2005 6.6L Duramax engine. The aluminum tubing features CNC mandrel bending for smooth airflow and excellent durability. The Signature Sinister Blue powder coat looks great and helps combat corrosion. You also receive a reusable cotton filter, eliminating the need to constantly be buying new air intake filters., Features:Precision CNC Mandrel Bent Aluminum Tubing for a Perfect Fit, Oversized Long Lasting Reusable Cotton Filter Media, Significantly Improved Throttle Response and Turbo Spool-up, Great for Daily Driving, Towing or Race Day, Perfect When Paired With a Sinister Diesel Exhaust or Tuner, Polished and Powder Coated in our Signature Sinister Blue, Easy, Drop-In Installation with Basic Hand Tools and Minimum ExperienceIncludes:CNC Mandrel Bent Aluminum Intake Tube, Reusable Cotton Media Filter, Installation HardwareClick Here for Pre-Filte. - We have been testing and running these for quite some time, and have out performed every other intake we have put it up against. This Part Fits: Year Make Model Submodel 2004-2005 Chevrolet Silverado 2500 HD Base 2004-2005 Chevrolet Silverado 2500 HD LS 2004-2005 Chevrolet Silverado 2500 HD LT 2004-2005 Chevrolet Silverado 2500 HD WT 2004-2005 Chevrolet Silverado 3500 Base 2004-2005 Chevrolet Silverado 3500 LS 2004-2005 Chevrolet Silverado 3500 LT 2004 Chevrolet Silverado 3500 WT 2004-2005 GMC Sierra 2500 HD Base 2004-2005 GMC Sierra 2500 HD SLE 2004-2005 GMC Sierra 2500 HD SLT 2004-2005 GMC Sierra 2500 HD WT 2004-2005 GMC Sierra 3500 Base 2004-2005 GMC Sierra 3500 SLE 2004-2005 GMC Sierra 3500 SLT 2004-2005 GMC Sierra 3500 WT ## Details - **Price:** 760.47 CAD - **Vendor:** Sinister Diesel - **Type:** Cold Air Intakes ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 760.47 CAD | In stock | ## Images - Photo - Primary - Photo - Primary - User 1 - User 3 - User 2 - Logo Image --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/sinister-diesel-cold-air-intake-04-5-05-chevy-gmc-duramax-6-6l-lly) > Updated: 2026-07-07