GMC Sierra 3500 HD Performance Air Intake – Wehrli High Flow Intake Horn, Bengal Silver (2017–2025). A rugged cast-aluminum turbo inlet that replaces the restrictive OEM piece for cleaner airflow and sharper response.

Built for the 6.6L L5P Duramax, the true 4 in. inlet uses a smooth transition and an anti-surge face that mates to the compressor cover for efficient airflow. CNC-machined cast aluminum with an O-ringed turbo face boosts durability and response, with a richer turbo note. Includes a billet #10 ORB PCV port, mounting hardware, and a Bengal Silver powder coat. Works with OEM/aftermarket cold air systems; bolt-on, no tuning required.

Features

• True 4 in. turbo inlet, optimized anti-surge face
• CNC-machined cast aluminum; O-ring seal at turbo
• 25% greater flow area at the compressor inlet
• Compatible with stock and drop-in upgraded turbos
• Made in USA; hardware included

Have questions or planning a build? Call our Austin, TX shop at 512-982-9393 or our Los Angeles area shop at 562-981-6800. We offer installation and customization at both locations.

Buying multiple items? Contact us for possible shipping discounts. We install on premises at both Austin and Los Angeles locations.

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