Wehrli WCFab

Fits 2017–2024 Chevrolet Silverado and GMC 2500/3500 HD with 6.6L Duramax Diesel

Part #: WCF100775-GRY

Overview

The Wehrli WCFab 17-24 Duramax L5P High Flow Intake Horn is a high-performance upgrade designed specifically for Chevrolet Silverado and GMC 2500/3500 HD trucks equipped with the 6.6L Duramax Diesel engine. Crafted from cast aluminum, this intake horn replaces the factory plastic inlet, offering a larger, more efficient airflow path to your turbocharger. The result is improved throttle response, enhanced engine breathing, and potential gains in overall performance. Its durable construction and custom powder coating not only boost functionality but also add a sleek, personalized aesthetic to your engine bay, making it an ideal choice for enthusiasts seeking both form and function.

Key Features

Designed to maximize airflow and durability, this intake horn features a cast aluminum construction that withstands high temperatures and harsh engine conditions. The large diameter opening reduces airflow restrictions, supporting better turbocharger efficiency. The billet aluminum port facilitates easy connection to the PCV system, ensuring a secure and reliable fit. Its custom powder coating provides corrosion resistance and allows for color customization to match your vehicle’s style. This upgrade is engineered to help your diesel engine breathe more freely, supporting improved throttle response and potentially enhancing power delivery.

Construction & Design

Manufactured from high-quality cast aluminum, the intake horn is engineered for strength and heat resistance. Its precise casting ensures a smooth internal surface, minimizing turbulence and maximizing airflow efficiency. The billet aluminum port is machined for a perfect fit with the PCV system, ensuring a secure connection that maintains engine integrity.

Performance & Response

By replacing the restrictive OEM plastic inlet with a high-flow cast aluminum horn, this component helps your turbocharger operate more efficiently. The increased airflow can lead to quicker throttle response and improved engine breathing, especially under load. Designed to support your truck’s performance, it provides a more direct and unrestricted airflow path, which can contribute to smoother acceleration and potentially better fuel efficiency.

Installation & Fitment

This intake horn is designed as a direct replacement for the factory component on 2017-2024 Chevrolet Silverado and GMC 2500/3500 HD trucks with the 6.6L Duramax Diesel engine. Installation typically involves removing the stock inlet and replacing it with the high-flow cast aluminum part. Basic mechanical skills and standard hand tools are sufficient for installation.

What’s Included

The package includes the high-flow cast aluminum intake horn, billet aluminum PCV port, and all necessary mounting hardware for a straightforward installation. Custom powder coating options are available to match your vehicle’s aesthetic preferences.