Wehrli 04.5-05 Duramax LLY 4in Stage 2 Intake Kit - Illusion Purple

WCFab 2004.5-2005 GM LLY 6.6L Duramax Stage 2 Intake Kit with Air Box. This high flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on your diesel for improved engine performance. All new design significantly increases air flow to your turbo producing improved horsepower and torque, quicker throttle response, and cooler intake temperatures by drawing cold air through the inner fender. All aluminum construction features large diameter 4" piping with smooth aerodynamic bends to improve intake air velocity, volume, and provide more aggressive engine and turbo sound during acceleration. High quality hardware, silicone boot, seals, and stainless steel t-bolt clamps ensure optimum durability and ease of installation. Removable air box lid elementallows for easy visual inspection and maintenance of your WCFab filter with included hydrophobic pre-filter cover, to help keep your MAF sensor, turbo, and engine airways contaminant free. Includes High Flow 4.8 in. Cast Aluminum Turbo Intake Horn which removes restrictions in the OEM setup to improve turbo spool and top end power and eliminates factory resonator for improved appearance and more aggresive turbo sound. This High Flow 4.8 in. horn is fully compatible with OEM and upgraded drop in VGT style turbochargers. Full assembly finished in your choice of WCFab's signature custom powder coat colors for a look as unique as your truck. Wehrli Custom Fab Intake Kit Stage 2, 4in., for 2004.5-2005 Duramax LLY, Illusion Purple

• Dry Air Filter with Outerwear's Pre-Filter Cover
• Silicone Boot & Stainless Steel T-Bolt Clamps
• 4.8 in. Cast Aluminum Turbo Intake Horn
• Installs Easily with Basic Hand tools
• Includes Installation Hardware
• No Tuning Required, Bolt On!
• Custom powder coat finish
• Air Box with Lid
• 4" Intake Pipe
• Made in USA

Upgrade your 2004-2005 GM Duramax LLY with the Wehrli Stage 2 Intake Kit, designed for improved performance and engine efficiency. This comprehensive kit features a high-flow fabricated aluminum intake pipe and an air box enclosure with a dry filter assembly, replacing restrictive factory components to optimize airflow. The large 4-inch diameter piping with smooth aerodynamic bends enhances intake air velocity and volume, resulting in increased horsepower, torque, and quicker throttle response. The kit's design draws cold air through the inner fender, helping to lower intake temperatures and improve overall engine performance. The full assembly is finished in a custom Illusion Purple powder coat, providing a distinctive look that complements your truck’s aesthetic while ensuring durability. All hardware, including silicone boots, seals, and stainless steel t-bolt clamps, is included for a straightforward installation that requires only basic hand tools. The removable air box lid with a hydrophobic pre-filter cover allows for easy inspection and maintenance of the filter, helping to keep your MAF sensor, turbo, and engine airways free of contaminants. Also included is a high-flow 4.8-inch cast aluminum turbo intake horn that removes restrictions from the OEM setup, enabling better turbo spool, top-end power, and a more aggressive turbo sound during acceleration. This component is compatible with OEM and upgraded VGT-style turbochargers, making it a versatile upgrade. Made in the USA, this intake kit requires no tuning—simply bolt it on and enjoy improved engine performance and sound. The Wehrli Intake Kit is a perfect choice for diesel enthusiasts seeking reliable, high-quality parts that combine functional performance with custom styling.

Features:

• Dry air filter with hydrophobic pre-filter cover for contaminant protection

• Silicone boot and stainless steel T-bolt clamps for durability and secure fit

• High-flow 4.8-inch cast aluminum turbo intake horn improves spool and power

• Easy installation with included hardware and basic hand tools

• No tuning required, bolt-on upgrade for instant performance gains

• Custom Illusion Purple powder coat finish for style and corrosion resistance

• Air box with removable lid for easy filter inspection and maintenance

• 4-inch intake pipe with aerodynamic bends to increase airflow and velocity

• Compatible with OEM and upgraded VGT-style turbochargers

• Manufactured in the USA for quality and reliability

Fitment:
Chevrolet Silverado 2500 HD Base 2004
Chevrolet Silverado 2500 HD Base 2005
Chevrolet Silverado 2500 HD LS 2005
Chevrolet Silverado 2500 HD LT 2005
Chevrolet Silverado 3500 Base 2004
Chevrolet Silverado 3500 Base 2005
Chevrolet Silverado 3500 LS 2004
Chevrolet Silverado 3500 LS 2005
Chevrolet Silverado 3500 LT 2004
Chevrolet Silverado 3500 LT 2005
Chevrolet Silverado 3500 WT 2004
GMC Sierra 2500 HD Base 2004
GMC Sierra 2500 HD Base 2005
GMC Sierra 2500 HD SLE 2004
GMC Sierra 2500 HD SLE 2005
GMC Sierra 2500 HD SLT 2004
GMC Sierra 2500 HD SLT 2005
GMC Sierra 2500 HD WT 2004
GMC Sierra 2500 HD WT 2005
GMC Sierra 3500 Base 2004
GMC Sierra 3500 Base 2005
GMC Sierra 3500 SLE 2004
GMC Sierra 3500 SLE 2005
GMC Sierra 3500 SLT 2004
GMC Sierra 3500 SLT 2005
GMC Sierra 3500 WT 2004
GMC Sierra 3500 WT 2005