Wehrli Custom Fabrication WCF100301-BC 4" Stage 2 Intake Kit Bronze Chrome LLY Duramax

The Wehrli Custom Fabrication Stage 2 Intake Kit is a complete high-flow cold air intake system designed for 2004.5-2005 GM LLY 6.6L Duramax engines. This system replaces the restrictive factory plastic intake components with premium fabricated aluminum construction to significantly improve engine performance, throttle response, and turbo sound.

Complete Kit Includes:

• 4" diameter intake pipe constructed from 14-gauge aluminum with smooth aerodynamic bends
• Air box and lid constructed from heavy-duty 10-gauge aluminum sheet
• High-flow 4.8" cast aluminum turbo intake horn - CNC machined from cast aluminum
• Dry air filter with hydrophobic Outerwears pre-filter cover
• Silicone reducer boot and stainless steel T-bolt clamps
• O-ring seals and all necessary installation hardware

Performance Benefits:

• Significantly increases airflow to turbocharger for improved horsepower and torque
• Quicker throttle response and reduced turbo lag
• Cooler intake air temperatures by drawing cold air through inner fender
• More aggressive turbo and engine sound during acceleration
• Eliminates factory resonator for improved appearance and airflow

Premium Construction Features:

• 4.8" intake horn is the largest on the market for maximum airflow
• Includes integrated PCV port for proper crankcase ventilation
• Compatible with OEM and upgraded drop-in VGT style turbochargers
• Removable air box lid allows easy filter inspection and maintenance
• Custom Bronze Chrome powder coat finish for distinctive appearance
• Made in USA with high-quality materials and craftsmanship

This kit installs easily with basic hand tools and provides substantial performance gains while maintaining excellent filtration. The enclosed air box design protects the filter and helps maintain consistent intake temperatures. Bronze Chrome powder coat finish provides a unique, durable appearance that resists corrosion and complements custom engine bay styling.