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Sinister Diesel's cold air intake for 2011–2012 Chevy/GMC Duramax 6.6L LML uses CNC mandrel-bent aluminum tubing and an oversized reusable cotton filter to improve throttle response and turbo spool. Polished and powder-coated in Sinister Blue to resist corrosion, the kit includes silicone couplers, mounting hardware and is designed for easy drop-in installation with basic hand tools. It’s aimed at owners seeking better performance, efficiency and under-hood appearance.
Sinister Diesel Cold Air Intake 11-12 Chevy / GMC Duramax 6.6L LML
