Wehrli Custom Fabrication WCF100535-GB Turbo Intake Horn Duramax - 4 for 2001-2004 LB7 Gloss Black

The Wehrli Custom Fabrication WCF100535-GB is a high-performance 4" turbo intake horn designed for 2001-2004 GM 6.6L Duramax LB7 engines. This precision CNC machined cast aluminum intake horn flows 40% better than the restrictive stock turbo mouthpiece, delivering increased airflow directly to your turbocharger for improved engine performance and throttle response.

Key Features:

• True 4" inlet with smooth flowing transition to turbo compressor cover for optimized airflow and drivability
• Precision CNC machined cast aluminum construction
• Compatible with factory IHI turbo or upgraded drop-in IHI turbos and aftermarket intakes
• Delivers quicker spool-up and increased horsepower - max-effort tuned trucks can see 10-15 HP gains while applications with upgraded turbochargers can experience as much as 20 HP improvements
• Premium gloss black powder coat finish
• Made in USA

This intake horn works with performance aftermarket intake systems utilizing a 4" boot connection with bead roll. Installation requires modification or removal of OEM wire harness track that runs in front of the OEM intake horn for proper clearance - wire loom provided to help complete this process. An excellent upgrade for enthusiasts seeking maximum airflow and performance from their LB7 Duramax.