Wehrli WCF100702-GW 4" Intake Kit w/Air Box for 20-25 GM 6.6L L5P Duramax

Vehicle Fitment

• 2020-2025 Chevrolet Silverado 2500HD/3500HD & GMC Sierra 2500HD/3500HD (6.6L L5P Duramax)

Features

• High-flow 4" aluminum intake piping
• Enclosed air box with removable lid
• Dry air filter with Outerwears pre-filter cover
• Gloss white powder-coated finish (WCF100702-GW)
• Inner fender and hood Ram-Air compatible cold-air design
• Silicone boot and stainless steel T-bolt clamps
• Improved airflow for horsepower and torque gains
• Bolt-on installation with no tuning required

Specifications

• Brand: Wehrli Custom Fabrication
• Part Number: WCF100702-GW
• Intake Diameter: 4" high-flow aluminum
• Air Box: 10ga. aluminum with lid
• Filter Type: Dry style
• Finish: Gloss white powder coat
• Compatibility: Stock hood Ram-Air systems
• Installation: Bolt-on, basic hand tools

Included Components

• 1x 4" high-flow intake pipe - gloss white
• 1x Enclosed air box with removable lid
• 1x Dry air filter
• 1x Outerwears pre-filter cover
• 1x Silicone intake boot
• 2x Stainless steel T-bolt clamps
• 1x Hood Ram-Air seal
• Installation hardware

Product Description

The Wehrli WCF100702-GW 4" Intake Kit with Air Box is a premium performance upgrade for 2020-2025 Chevrolet Silverado and GMC Sierra trucks equipped with the 6.6L L5P Duramax diesel engine. This high-flow intake system replaces the restrictive factory plastic intake to significantly increase air volume to the turbocharger, delivering improved horsepower, torque, throttle response, and cooler intake temperatures. The gloss white powder-coated aluminum piping and air box offer both performance gains and a custom factory-plus aesthetic.

Designed as a direct bolt-on solution, the WCF100702-GW installs with basic hand tools and requires no tuning. An enclosed air box with removable lid, dry filter, and pre-filter cover keeps debris out while providing easy maintenance access. All necessary clamps, boots, and hardware are included for a complete installation. This intake kit is engineered to work with stock trucks and Ram-Air hood systems, offering a simple yet effective way to elevate Duramax performance and sound.