Sinister Diesel Cold Air Intake for 2001–2004 Chevy/GMC 6.6L Duramax LB7
Give your Duramax LB7 an intake upgrade with smooth mandrel-bent aluminum tubing, an oversized reusable cotton-media filter and Signature Sinister Blue styling. This Sinister Diesel cold air intake is listed for 2001–2004 Chevy/GMC 2500 and 3500 trucks equipped with the 6.6L Duramax LB7 diesel engine.
Whether you’re preparing for a towing trip or refreshing your daily driver, the reusable filter and blue powder-coated tubing bring serviceable filtration and a coordinated look to your engine compartment.
Key features
- CNC mandrel-bent aluminum tube: Designed for smooth airflow.
- Oversized reusable cotton-media filter: Can be serviced and reused according to the manufacturer’s instructions.
- Signature Sinister Blue finish: Polished and powder-coated tubing for under-hood style and corrosion protection.
- Silicone couplers: Supplied for the intake connections.
- Installation hardware: Included for the manufacturer-described drop-in installation using basic hand tools.
Sinister Diesel describes this intake as improving throttle response and turbo spool-up. Actual results vary with 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: 2001–2004 Chevy/GMC 2500 and 3500 with the 6.6L Duramax LB7 diesel engine. Confirm the engine designation before ordering; model year alone does not establish compatibility.
Filter care and accessories
Follow Sinister Diesel’s cleaning and servicing instructions for 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-LB7