Stillen

Cold Air Intake System 6.6L

$154.95

SKU: 10478

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The Stillen cold air intake system is engineered to deliver increased horsepower and improved throttle response for 2017-2019 Chevrolet Silverado and GMC Sierra 2500HD/3500HD models equipped with the 6.6L engine. By relocating the air filter away from the heat of the engine compartment, this system ensures cooler, denser air enters the combustion chamber, optimizing performance. The intake features a cylindrical, large-diameter tube design that promotes significantly better airflow compared to restrictive factory air filter boxes. Included is a premium, reusable air filter that is easy to clean, ensuring a long service life and consistent performance. Installation is straightforward, allowing for an immediate boost in the vehicle's capabilities. This intake system is compatible with a wide range of configurations, including 2WD and 4WD models of the 2017-2019 GMC Sierra 3500 HD, GMC Sierra 2500 HD, and Chevrolet Silverado 3500 HD, as well as the 2017-2019 Chevrolet Silverado 2500 HD. However, please note that this product is not for sale in California or other states that have adopted CARB regulations.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandStillen
Part Number10478
CategoryAir and Fuel

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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