Cold Air Intake for Silverado & Sierra HD (2001-2006)
- Chevrolet Silverado 2500 HD and 3500 2001-2006
- GMC Sierra 2500 HD and 3500 2001-2006
- Classic bodies of all four listed for 2007
- CARB exempt under EO D-269-37
- 57 Series high-density polyethylene tube with heat shield
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California Air Resources Board Exempt: Yes; CARB EO: D-269-37; 57 Series - High Density Polyethylene Tube; w/Heat Shield Fitment on this page is based on the manufacturer’s application data.
About this part
Cold Air Intake, fitment-checked
Heavy-duty only, and every entry follows the same pattern: 2001-2006 on the standard body, then a separate Classic line for 2007. That applies to the Silverado 2500 HD and 3500 and the Sierra 2500 HD and 3500 alike.
Four trucks, each listed twice — once for the standard body across 2001-2006 and once as a Classic for 2007, the year GM kept the older cab in production alongside its replacement. The Chevrolet Silverado 2500 HD and 3500 and the GMC Sierra 2500 HD and 3500 all follow that shape, so if the vehicle is a 2007 the Classic badge is what settles whether this fits. California exemption is executive order D-269-37, and the kit is 57 Series with a high-density polyethylene tube and heat shield.
Specifications
Specs
| Brand | K&N |
| Part number | 57-3031-1 |
| UPC / GTIN | 00024844095497 |
| Shipping weight | 11.41 lb |
| Warranty | No-Hassle Lifetime Limited |
| Country of origin | US |
| Category | Performance › Cold Air Intakes |
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