Sinister Diesel Cold Air Intake for 2011–2012 Chevy/GMC 6.6L Duramax LML
Upgrade your 2011–2012 Duramax LML intake with CNC mandrel-bent aluminum tubing, an oversized reusable cotton-media filter and Signature Sinister Blue styling. This Sinister Diesel cold air intake is listed for Chevy/GMC 2500 and 3500 trucks equipped with the 6.6L Duramax LML diesel engine.
Whether you’re preparing for a towing trip or refreshing your daily driver, the blue powder-coated tube adds a coordinated under-hood look, while the reusable filter can be serviced for continued use.
Key features
- CNC mandrel-bent aluminum tubing: Designed for smooth airflow.
- Oversized reusable cotton-media filter: Service and reuse according to the manufacturer’s instructions.
- Signature Sinister Blue finish: Polished and powder-coated tubing for corrosion protection and under-hood style.
- Silicone couplers: Supplied for the intake connections.
- Drop-in installation: Described by Sinister Diesel as installable with basic hand tools; mounting hardware is included.
Sinister Diesel describes the intake as improving throttle response and turbo spool-up. Results depend on vehicle condition, modifications and operating conditions; no specific horsepower or fuel-economy gains are stated.
Included components
- CNC mandrel-bent aluminum intake tube
- Reusable cotton-media air filter
- Silicone couplers
- Installation hardware
Fitment
Listed application: 2011–2012 Chevy/GMC 2500 and 3500 with the 6.6L Duramax LML diesel engine. Confirm your model year, engine and compatibility with any existing modifications before ordering.
Filter care and accessories
Follow Sinister Diesel’s instructions for cleaning and servicing the reusable filter. Contact us to confirm compatible pre-filter availability; a pre-filter is not listed among the supplied components.
Part number: SD-CAI-LML-11