Wehrli Custom Fabrication WCF100417-RED High Flow Turbo Intake Horn LML Duramax Red

The Wehrli Custom Fabrication WCF100417-RED High Flow Turbo Intake Horn is engineered to maximize performance on 2011-2016 LML Duramax diesel engines. This premium upgrade replaces the restrictive factory plastic inlet with a high-flow cast aluminum design that delivers improved throttle response and increased horsepower.

Key Features:

• 4.8-inch inlet diameter - largest intake horn on the market for maximum airflow
• CNC machined cast aluminum construction for strength and durability
• 5.6% improvement in airflow over stock intake horn
• Integrated PCV port for proper crankcase ventilation
• Eliminates restrictive OEM resonator connection for improved sound and performance
• Custom WCFab Red powder coat finish for long-lasting appearance
• Made in the USA with premium materials and craftsmanship

What's Included:

• Cast aluminum intake horn with WCFab Red powder coat
• Silicone reducer boot for secure connection
• Stainless steel T-bolt clamps
• O-ring seal and new EGR gaskets

Important Compatibility Notes: This intake horn requires an intake system that uses a boot and clamp connection (accepts 4-inch boot). Not compatible with OEM or aftermarket intakes like K&N that have molded rubber connections built into the intake pipe. Not compatible with aftermarket LML Y-bridges that relocate the inlet from the factory driver-side position. 2011 model year trucks require updated PCV regulating valve (2012-2016 specification) for proper fitment.

Replaces GM part numbers 12642296 and 12637801. Designed to complement WCFab Stage 1 LML intake kits and high flow bundle kits. This product cannot be shipped to California due to emissions regulations.