Wehrli WCF100353-GB 4in Intake Kit for 2020-2024 Chevy Silverado/GMC 6.6L

Vehicle Fitment

• 2020-2024 Chevrolet Silverado 2500 HD (6.6L Duramax L5P Diesel, RWD/4WD)
• 2020-2024 Chevrolet Silverado 3500 HD (6.6L Duramax L5P Diesel, RWD/4WD)
• 2020-2024 GMC Sierra 2500 HD (6.6L Duramax L5P Diesel, RWD/4WD)
• 2020-2024 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 to maximize cold air intake efficiency
• High-flow dry performance air filter for improved filtration
• Outerwear's hydrophobic pre-filter cover blocks water and debris
• Uses factory hood ram-air inlet for cooler intake temperatures
• Improves turbocharger efficiency and throttle response
• Durable gloss black powder coat finish resists corrosion
• Bolt-on installation requiring no ECU tuning

Specifications

• Part Number: WCF100353-GB
• 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: Gloss black powder coat
• Installation: Direct bolt-on with supplied hardware
• Fuel Compatibility: Diesel engines

Included Components

• 1x 4-inch aluminum intake pipe
• 1x Fabricated aluminum sealed 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 Complete installation hardware kit

Product Description

The Wehrli WCF100353-GB 4-inch Intake Kit is engineered for 2020-2024 Chevrolet Silverado and GMC Sierra HD trucks equipped with the 6.6L Duramax L5P diesel engine. This high-flow intake system replaces the restrictive factory intake assembly with a large-diameter mandrel-bent aluminum pipe and a fabricated aluminum sealed air box to improve airflow and turbocharger efficiency.

Featuring a high-flow dry air filter with an Outerwear's hydrophobic pre-filter cover, the system protects the intake from water, dirt, and debris while maintaining optimal airflow. It utilizes the factory hood ram-air inlet to provide cooler intake temperatures during towing, hauling, or performance driving, enhancing engine efficiency and reliability.

Finished in a durable gloss black powder coat, this intake kit provides a clean engine bay look while delivering performance gains. Installation is straightforward using factory mounting points and requires no ECU tuning. Fitment confirmed through 2024. 2025 coverage unconfirmed at time of listing.