Wehrli Custom Fabrication WCF100684-IP L5P Duramax 4" Stage 2 Intake Kit with Air Box Illusion Purple

The Wehrli Custom Fabrication WCF100684-IP is a high-flow Stage 2 intake system designed for 2020-2025 GM L5P 6.6L Duramax engines. This complete intake kit replaces the restrictive factory plastic components with precision-fabricated aluminum construction to maximize airflow, improve throttle response, and deliver cooler intake temperatures for enhanced engine performance.

Key Features:

• 4-inch mandrel-bent aluminum intake pipe for maximum airflow
• 4-inch intake horn with integrated PCV port and surge ring
• Fabricated air box and lid constructed from 10-gauge aluminum sheet
• Premium dry media air filter with Outerwears pre-filter cover included
• High-quality silicone boots and stainless steel T-bolt clamps
• Seal for connection to functional ram air port on hood
• Finished in Illusion Purple (-IP) powder coat for a custom appearance
• Made in USA with precision TIG welding and CNC machining

Installation and Compatibility:

• Bolt-on installation with basic hand tools
• No tuning required—compatible with stock trucks
• No other modifications or upgrades necessary
• Air filter monitor system must be disabled to prevent service messages

This Stage 2 intake kit provides improved engine airflow, increased intake air velocity and volume, and delivers a more aggressive engine and turbo sound during acceleration. Engineered and manufactured by Wehrli Custom Fabrication in their state-of-the-art facility in DeKalb, Illinois, this intake system combines performance with distinctive custom styling.