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A sealed cold air intake kit for the 2020-2026 Chevrolet Silverado and GMC Sierra with the 6.6L Duramax L5P diesel. It replaces the stock airbox with a fully enclosed box, a snap-in lid with no screws, and a large cleanable cotton filter, plus silicone couplers and seals rated to 400F. Three inlet points let you tune airflow, and an optional box plug closes one off. It suits diesel owners who tow or want quicker spool and easier filter service; rivals like open-element intakes flow more but pull in engine heat, while this one trades some peak flow for heat shielding.
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Lowest price we've seen: $349.00 on Nov 13 at NorCal Truck. Tracked across 14 stores since Nov 13.
Rated 4.7 out of 5 across 220 ratings, owners mostly report a clean fit, easier filter service and a bit more turbo sound.
This cold air intake is made for Duramax L5P 6.6L diesel Silverado and Sierra trucks. It is built to restrict airflow less than the stock intake. A fully enclosed airbox protects the filter from dirt and keeps out engine heat.
The lid snaps onto the box without screws, so installation and inspection are quick. A silicone edge trim seals the lid against heat and debris. The coupler, lid seal and box plug are silicone, which handles temperatures up to 400°F without cracking or tearing. A silicone seal also connects the intake to the factory hood scoop and feeds air to the filter.
The airbox has three air inlet points. An optional plug seals off one of them. Airflow is best without the plug, but the plug can be used in an extreme heat wave. The kit has a mapped Mass Air Flow Sensor and is designed to avoid check engine lights with stock calibration or enhanced tuning.
