GMC Sierra 3500 HD Performance Air Intake – Wehrli 4in Intake Kit, Bengal Grey (2020–2025). Direct bolt-on for L5P 6.6L Duramax, replacing the restrictive factory system.

Fabricated 10‑gauge aluminum air box and lid pair with a smooth 4in aluminum tube that seals to the functional hood Ram Air port and pulls cooler air from the inner fender. A high‑flow dry filter with an included Outerwears pre‑filter preserves flow while catching debris. Stainless T‑bolt clamps, a quality silicone boot, and the durable Bengal Grey powder coat provide secure, long‑term performance. No tuning required; installs with basic hand tools on stock trucks.

Features

• 4in fabricated aluminum intake tube
• 10ga aluminum air box and lid
• Seals to functional hood Ram Air port
• Dry filter with Outerwears pre‑filter
• No tuning required; bolt‑on install

Have questions or want to schedule an install? Call us: TX 512-982-9393, CA 562-981-6800. Installation and customization services available at our Austin, Texas and Los Angeles, California area locations.

Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov