Cold Air Intake for GMC Sierra 1500 & Denali (2007-2008) 4.8L 5.3L 6.0L 6.2L

High-Flow Cold Air Intake for 2007-2008 GMC Sierra (GMT900)

What it Does: The AF Dynamic Cold Air Intake replaces the restrictive factory airbox on the 2007-2008 GMC Sierra to draw cooler, denser intake air and improve throttle response across the rev range.

The Stock GMC Sierra Intake Restriction

Factory GMT900 intake assemblies rely on convoluted accordion plastic tubing, severe internal baffling, and enclosed restrictive filter boxes designed strictly for cabin noise attenuation rather than volumetric efficiency. Under load, the corrugated rubber elbow induces boundary-layer turbulence, throttling mass airflow velocity into the throttle body. Furthermore, the unshielded composite airbox sits directly adjacent to the radiator and engine block, subjecting intake charges to severe thermal soak that inflates intake air temperatures (IATs) and causes the factory ECU to retard ignition timing.

The Engineering Solution

This intake kit replaces the OEM tract with a CNC mandrel-bent aluminum intake pipe finished in durable matte black powder coating, maintaining a uniform inner diameter to optimize laminar airflow velocity into the manifold. The system integrates a dedicated aluminum heat shield lined with reflective thermal insulation matting to block radiant underhood heat. Filtration is handled by an oiled, multi-layer high-flow conical filter offering up to 95% particulate filtration efficiency. Durable 4-ply reinforced silicone couplers, silicone vacuum lines, and stainless steel hardware eliminate vacuum collapse under high engine vacuum.

What's Included

• 1 x High-flow air filter (washable and reusable)
• 1 x Black powder-coated aluminum intake pipe
• 1 x Black powder-coated aluminum heat shield
• 1 x Reflective aluminum heat shield mat material
• 1 x 4-ply silicone coupler
• 1 x 4-ply silicone elbow
• Silicone vacuum hoses
• All necessary stainless steel button-head bolts, washers, locknuts, and band clamps
• Installation instructions

Technical Specifications

Compatibility

• 2007-2008 GMC Sierra 1500 4.8L V8 (New Body Style)
• 2007-2008 GMC Sierra 1500 5.3L V8 (New Body Style)
• 2007-2008 GMC Sierra 1500 6.0L V8 (New Body Style)
• 2007-2008 GMC Sierra Denali 6.2L V8 (New Body Style)

Frequently Asked Questions & Fitment Warnings

Does this fit the GMT900 Sierra?

Yes, this is a direct fit for the 2007-2008 GMC Sierra equipped with Gen IV Vortec engines. Will not fit models equipped with a mechanical (engine-driven) cooling fan, and will not fit 2007 "Classic" body style (GMT800) models.

Will this intake trigger a Check Engine Light (CEL)?

No, the intake retains the factory MAF sensor housing dimensions and operates safely on the stock ECU calibration without generating lean codes.

The GMC Towing Standard

Engineered to handle severe duty and heavy towing demands, this aluminum intake upgrade delivers consistent charge-air density to keep your Vortec V8 running cooler and stronger under sustained loads.