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Sinister Diesel cold air intake for 2004.5–2005 Chevy and GMC Duramax LLY 6.6L replaces the factory inlet with CNC mandrel‑bent aluminum tubing, reinforced silicone couplers and a reusable cotton filter. The Signature Sinister Blue powder coat improves corrosion resistance; the kit includes installation hardware and improves throttle response and turbo spool‑up for daily driving, towing or occasional track use with basic drop‑in installation.
Sinister Diesel Cold Air Intake 04.5-05 Chevy / GMC Duramax 6.6L LLY
