Wehrli Custom Fabrication WCF100412-GW High Flow Turbo Intake Horn - 4.8 Gloss White

The Wehrli Custom Fabrication WCF100412 is a high-flow cast aluminum intake horn designed for 2006-2010 GM 6.6L Duramax LBZ/LMM engines that replaces the restrictive OEM plastic inlet to provide a significant increase in airflow to your turbo. This intake horn features a 4.8-inch inlet and delivers a 20% improvement in air flow versus stock, making it the largest intake horn available on the market.

Key Features:

• Cast aluminum construction with 4.8-inch inlet diameter
• Retains connection port for PCV
• Eliminates factory resonator for improved appearance and more aggressive sound
• Improves performance and throttle response
• Available in custom powder coat finishes to enhance engine compartment appearance
• No tuning required for installation
• Made in the USA

This intake horn is designed to complement the WCFAB Stage 1 LBZ and LMM intake kits. The WCF100412 works with both factory and many upgraded turbocharger configurations for LBZ and LMM Duramax engines.

Important Compatibility Note: Not compatible with OEM and aftermarket intakes that do not use a silicone boot connection at the horn. If your intake has a built-in rubber connection that slides onto the OEM horn and is molded to the air intake pipe, it will not fit with this horn. The WCFAB horn must be used with an intake pipe that will accept a 4-inch boot and clamp. If your intake uses a boot and two clamps for connection, this horn will work with that intake.