Description
Fits: 2011–2012 Chevrolet Silverado / GMC Sierra 2500HD and 3500HD 6.6L LML diesel only.
This enclosed-airbox Brute Force HD system uses a polyethylene inlet tube and elbow with a large oil-free Dryflow element. It retains the original MAF sensor rather than deleting or bypassing engine controls.
Product details
- Exact MPN 21-9032DS; one black HD intake system.
- Correct instruction-listed service filter is 21-2258DK, not the 21-2288DK named in an older promotional article.
- Published seller shipping weight 13.5 lb; shipping box 24.38 × 17.38 × 15.75 in.
What is included
One intake tube 9-0405, elbow 9-0412, airbox 9-0406 and lid 9-0411; silicone hoses 5-1066 and 5-450; filter 21-2258DK and insert 5-2279; edge trim, rubber mount, mounting bracket, plug, grommet and specified fasteners. The instruction BOM calls for four 9472 band clamps plus one KITHS80 filter clamp.
Installation and service
Transfer the factory MAF with its O-ring intact. Install the filter insert, align the box to the factory fender inlet and check all seals and clearances. Retain the VIN-specific VECI label in the engine compartment as directed and place the EO label where it remains visible. Service the filter with AEM 1-1000; do not oil it.
Application and emissions notes
Official EO D-670-13 and D-670-15 list the exact 2011–2012 GM 2500/3500HD 6.6L applications; D-670-15 defines DS as a plastic-tube suffix. The exemption is application-specific, not universal road legality or approval for 2013–2016 trucks sharing the store category.
