Wehrli WCF100344-GW 4in Intake Kit for 2017-2019 Chevy Silverado/GMC 6.6L

Vehicle Fitment

• 2017-2019 Chevrolet Silverado 2500 HD (6.6L Duramax L5P Diesel, RWD/4WD)
• 2017-2019 Chevrolet Silverado 3500 HD (6.6L Duramax L5P Diesel, RWD/4WD)
• 2017-2019 GMC Sierra 2500 HD (6.6L Duramax L5P Diesel, RWD/4WD)
• 2017-2019 GMC Sierra 3500 HD (6.6L Duramax L5P Diesel, RWD/4WD)

Features

• 4-inch mandrel-bent aluminum intake pipe for increased airflow
• Fabricated aluminum sealed air box for improved intake efficiency
• High-flow dry air filter designed for diesel performance
• Outerwear's hydrophobic pre-filter cover helps block water and debris
• Utilizes factory hood ram-air duct and fender inlet for cooler air
• Designed to improve turbocharger airflow and throttle response
• Durable white powder-coat finish enhances engine bay appearance
• Direct bolt-on installation with no tuning required

Specifications

• Part Number: WCF100344-GW
• Product Type: Performance Cold Air Intake System
• Pipe Diameter: 4 inches
• Pipe Material: Mandrel-bent aluminum
• Air Box Material: Fabricated aluminum
• Filter Type: High-flow dry media filter
• Finish: White powder coat
• Installation: Direct bolt-on with supplied hardware
• Fuel Compatibility: Diesel engines

Included Components

• 1x 4-inch aluminum intake pipe
• 1x Fabricated aluminum air box with removable lid
• 1x High-flow dry air filter
• 1x Outerwear's hydrophobic pre-filter cover
• 1x Silicone intake coupler
• Multiple stainless steel T-bolt clamps
• 1x Hood ram-air seal
• 1x Installation hardware kit

Product Description

The Wehrli WCF100344-GW 4-inch Intake Kit is designed for 2017-2019 Chevrolet Silverado and GMC Sierra HD trucks equipped with the 6.6L Duramax L5P diesel engine. This high-flow intake replaces the restrictive factory intake components with a large-diameter mandrel-bent aluminum pipe and a fabricated sealed air box. The increased airflow helps improve turbocharger efficiency, throttle response, and overall engine performance for both stock and modified diesel trucks.

The system includes a high-flow dry air filter paired with an Outerwear's hydrophobic pre-filter cover to help keep dirt, moisture, and debris out of the intake system while maintaining strong airflow. Air is drawn through the factory hood ram-air duct and fender inlet area to provide cooler intake temperatures during heavy towing or performance driving. Finished in a durable white powder coat, the intake adds a clean, high-end appearance to the engine bay while providing long-lasting corrosion resistance. Installation is straightforward using factory mounting locations and requires no ECU tuning.