Chevrolet Silverado 3500 Performance Air Intake – Wehrli High Flow Intake Horn, Flat Black (2017–2025). Cast-aluminum turbo inlet that replaces the stock piece to increase airflow and sharpen throttle response on L5P Duramax trucks.

Designed as a true 4 in. inlet with a carefully shaped transition and anti-surge face that engages the compressor cover, this horn reduces restriction versus the OEM plastic unit. The CNC-machined casting uses an O-ring seal for a precise fit, adds a billet #10 ORB PCV connection, and installs as a bolt-on with no tuning. Compatible with stock trucks, OEM-style drop-in turbos, and factory or aftermarket cold air intakes. Made in the USA.

Features

• 25% greater flow area at the compressor inlet; up to 27% better flow than stock
• True 4 in. inlet with optimized anti-surge face
• CNC-machined cast aluminum with flat black powder coat
• O-ring seal, billet #10 ORB PCV port, and mounting hardware included

Ready to plan your build or need fitment help? Call Austin, TX at 512-982-9393 or the Los Angeles, CA area at 562-981-6800. We also offer professional installation and customization at our Austin and Los Angeles 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