Chevrolet Medium Duty 4500 Performance Air Intake – Wehrli High Flow Intake Horn in Bengal Silver for 2019–2024. This true 4-inch cast aluminum turbo inlet is built for the L5D 6.6L Duramax to move more air and sharpen throttle response.

Replacing the restrictive OEM plastic mouthpiece, the Wehrli horn features a smooth transition and an anti-surge face that mates precisely to the compressor cover for optimized drivability. CNC-machined cast aluminum with an O-ring seal improves durability and air control, while the #10 ORB billet port cleanly integrates the PCV connection. It’s a bolt-on upgrade requiring no tuning, compatible with stock trucks, OEM and aftermarket cold air intake systems, and OEM-style drop-in turbochargers. Custom Bengal Silver powder coat, includes mounting hardware, and Made in the USA. Delivers 25% greater flow area than OEM at the compressor inlet.

Features

• True 4 in. high-flow cast aluminum turbo intake horn
• Optimized anti-surge face for stable, efficient airflow
• CNC-machined with O-ring seal at turbo face
• #10 ORB billet PCV connection and included hardware
• Bolt-on install, no tuning required
• Works with OEM and aftermarket cold air intake systems
• Made in the USA, Bengal Silver powder coat

Questions or planning an install? Call our Austin, TX shop at 512-982-9393 or our Los Angeles, CA area shop at 562-981-6800. We offer professional installation and customization services at both locations.

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

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