Wehrli WCF100352-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 improved turbocharger airflow
• Fabricated aluminum sealed air box to maximize cold air intake efficiency
• High-flow dry performance air filter for improved filtration and airflow
• Outerwear's hydrophobic pre-filter cover helps protect against water and debris
• Engineered to utilize factory hood ram-air inlet for cooler intake temperatures
• Improves throttle response and turbocharger efficiency
• Durable gloss black powder-coat finish for corrosion resistance and engine bay styling
• Direct bolt-on installation using factory mounting points

Specifications

• Part Number: WCF100352-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
• 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 seal for ram-air inlet
• 1x Complete installation hardware kit

Product Description

The Wehrli WCF100352-GB 4-inch Intake Kit is designed 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 components with a large-diameter mandrel-bent aluminum intake tube and a fabricated aluminum sealed air box, allowing the turbocharger to receive a greater volume of clean, cooler air.

A high-flow dry air filter combined with an Outerwear's hydrophobic pre-filter helps protect the intake system from moisture, dirt, and debris while maintaining excellent airflow. The design draws cooler air from the factory hood ram-air inlet, helping maintain stable intake temperatures during heavy towing, hauling, or performance driving. The gloss black powder-coated finish provides long-term durability while giving the engine bay a clean performance look.

This intake kit is designed as a direct bolt-on upgrade that installs using factory mounting points and requires no ECU tuning. It's an excellent performance and reliability upgrade for Duramax owners looking to improve airflow, turbo response, and engine bay appearance. Fitment confirmed through 2024. 2025 coverage unconfirmed at time of listing.