Chevrolet Medium Duty 6500 Performance Air Intake by Wehrli (WCFab) – High Flow Intake Horn in Sparkle Copper for 2019–2024 L5D 6.6L Duramax. A direct bolt-on 4 in. turbo inlet designed to cut restriction and sharpen throttle response.

This CNC-machined, cast-aluminum horn replaces the factory plastic mouthpiece with a true 4 in. inlet and a smooth anti-surge face that locates precisely in the compressor cover. An O-ring seal, #10 ORB PCV port, and included hardware make installation straightforward, with no tuning required. Manufacturer data shows up to 25% greater flow area at the compressor inlet and 27% better flow than stock. Works with stock or OEM-style drop-in turbos and with OEM or aftermarket cold air intake systems. Finished in durable Sparkle Copper powder coat. Made in the USA.

Features

• True 4 in. turbo inlet with optimized transition and anti-surge face
• CNC-machined cast aluminum; O-ring seal at compressor cover
• #10 ORB billet hose barb for PCV connection
• Bolt-on install; no tuning required; includes hardware
• Compatible with OEM/aftermarket CAI systems and drop-in turbos

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

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

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