Wehrli Intake Kit

Fits 2020–2025 Chevrolet Silverado and GMC Sierra 2500/3500 HD with 6.6L LP5 Duramax

Part #: WCF100684-GW

Overview

The Wehrli Stage 2 4-inch Intake Kit is a high-flow performance upgrade designed specifically for 2020 to 2025 Chevrolet Silverado and GMC Sierra 2500/3500 HD trucks equipped with the 6.6L LP5 Duramax engine. This kit replaces the factory’s restrictive plastic intake components with a fabricated aluminum intake pipe and air box enclosure paired with a dry filter assembly. It is intended for truck owners seeking improved engine breathing, enhanced throttle response, and a more aggressive engine sound without compromising durability or style.

By increasing airflow to the turbocharger, this intake kit supports improved horsepower and torque delivery while helping to reduce intake air temperatures. Its design draws cooler air through the hood Ram Air duct and inner fender, contributing to better combustion efficiency and overall engine performance.

Key Features

This intake kit offers a range of technical and practical benefits:

• Constructed from high-quality fabricated aluminum for strength and heat resistance
• Large 4-inch diameter piping with smooth aerodynamic bends to optimize airflow velocity and volume
• Intake horn diameter over an inch larger than OEM to reduce turbo inlet restriction
• Dry filter assembly designed for efficient filtration and easy maintenance
• Draws cold air through factory hood Ram Air duct and inner fender for cooler intake temperatures
• Finished in a gloss white powder coat for a durable, custom appearance
• Direct replacement for multiple GM part numbers, ensuring proper fit and function

Construction & Design

The entire assembly is crafted from lightweight yet durable aluminum, providing superior heat dissipation compared to stock plastic components. The smooth bends in the piping reduce turbulence and promote consistent airflow, which supports improved engine breathing and turbocharger efficiency. The powder-coated finish not only enhances corrosion resistance but also adds a distinctive aesthetic that complements your truck’s engine bay.

Installation & Fitment

This intake kit is designed as a direct bolt-on replacement for the factory intake system on 2020–2025 Chevrolet Silverado and GMC Sierra 2500/3500 HD trucks with the 6.6L LP5 Duramax engine. Installation requires no major modifications and includes all necessary hardware for a secure fit. The kit replaces several GM part numbers, ensuring compatibility with the original equipment.