Wehrli Intake Kit

Fits 2004.5–2005 GM Duramax LLY 6.6L

Part #: WCF100301-IP

Overview

The Wehrli 04.5-05 Duramax LLY 4-inch Stage 2 Intake Kit is designed to enhance the airflow and performance of your diesel engine. Crafted specifically for the 2004.5 to 2005 GM Duramax LLY models, this kit replaces the factory plastic intake components with a high-flow, fabricated aluminum intake pipe and an enclosed air box with a dry filter assembly. It’s an ideal upgrade for diesel enthusiasts seeking improved horsepower, torque, and throttle response, while also supporting cooler intake temperatures for better engine efficiency and reliability. Whether you’re upgrading for increased power or improved engine sound, this intake kit offers a significant performance boost with a sleek, durable design.

Key Features

This intake system features a robust aluminum construction designed to withstand the rigors of high-performance driving. Its innovative design promotes maximum airflow to your turbocharger, helping to optimize engine response and power delivery. The enclosed air box draws cold air through the inner fender, reducing intake air temperatures and supporting more consistent performance. The dry filter assembly ensures easy maintenance and long-lasting filtration, making it a practical choice for daily driving or heavy-duty applications. The kit’s precise fitment and high-quality materials make installation straightforward and reliable.

Construction & Design

Constructed entirely from fabricated aluminum, this intake kit combines durability with lightweight performance. The design emphasizes efficient airflow paths and a secure fit, ensuring minimal turbulence and maximum intake efficiency. The enclosed air box is engineered to draw cold air from outside the engine bay, helping to lower intake temperatures and improve overall engine cooling.

Driving Feel & Feedback

By increasing airflow and reducing restrictions, this intake kit enhances throttle response and engine responsiveness. Drivers will notice a more immediate and confident acceleration feel, along with a deeper, more aggressive intake sound that complements the diesel’s natural tone.

Installation & Fitment

Designed specifically for 2004.5-2005 GM Duramax LLY models, this kit installs with standard tools and requires no permanent modifications. The precise engineering ensures a secure fit, making the upgrade straightforward for DIY enthusiasts and professional installers alike.

What’s Included

The package includes the fabricated aluminum intake pipe, air box enclosure, dry filter assembly, and all necessary hardware for a complete installation.

Ideal For

Perfect for diesel owners looking to maximize their engine’s airflow, improve power output, and enhance throttle response. Suitable for daily drivers, towing, and performance enthusiasts seeking a reliable upgrade for their Duramax LLY.