Wehrli Intake Horn

Fits 2020–2024 Chevrolet Silverado 2500/3500 with 6.6L L5P Duramax

Part #: WCF100833-RED

Overview

The Wehrli 3.5-inch Intake Horn is a high-performance upgrade designed specifically for the 2020-2024 Chevrolet Silverado and GMC Sierra equipped with the 6.6L L5P Duramax engine. Crafted to replace the OEM plastic intake horn, this component enhances airflow efficiency, supporting improved engine response and power output. Its robust construction and precise fitment make it an ideal choice for enthusiasts seeking to optimize their diesel truck’s performance without the need for complex tuning adjustments. Whether you're looking to increase horsepower, improve throttle response, or simply upgrade your engine bay aesthetics, this intake horn delivers reliable, plug-and-play performance. Primary benefits include increased airflow capacity, improved engine breathing, and a more aggressive intake sound. The design maintains compatibility with factory and aftermarket tuning setups, making it suitable for both stock and modified vehicles. Its durable construction ensures long-lasting performance under demanding conditions, helping to support your vehicle’s powertrain longevity.

Key Features

This intake horn features a 3.5-inch diameter, significantly larger than the factory 2.4-inch plastic component, which allows for better airflow and reduced intake restriction. Made from high-quality materials, it is engineered for durability and heat resistance, ensuring consistent performance. The design incorporates a factory-style fitment, enabling straightforward installation without modifications. Its sleek red finish adds a bold visual upgrade to your engine bay, complementing other performance modifications. The horn is compatible with factory turbo systems and does not require tuning for installation, offering a simple yet effective upgrade for your diesel truck.

Construction & Design

Constructed from high-strength, heat-resistant materials, this intake horn is designed to withstand the high temperatures and stresses of diesel engine operation. Its precise engineering ensures a perfect fit, reducing the risk of leaks or fitment issues. The smooth internal surface promotes optimal airflow, contributing to improved engine efficiency and response.

Performance & Response

By increasing the intake diameter, this horn helps improve airflow to the turbocharger, resulting in a noticeable increase in horsepower and throttle response. Users have reported gains of approximately 25 horsepower when combined with appropriate tuning. The enhanced airflow also supports better turbo spool and overall engine efficiency, making it an excellent upgrade for towing, hauling, or spirited driving.

Installation & Fitment

Designed for direct bolt-on installation, this intake horn requires no additional modifications or tuning for basic operation. It is compatible with the factory turbo system and fits seamlessly into the OEM engine bay layout, making it an accessible upgrade for DIY enthusiasts and professional installers alike.

What’s Included

The package includes the 3.5-inch intake horn in a striking red finish, ready for installation on your L5P Duramax engine. Hardware and mounting accessories are included for a secure fitment.