Wehrli Exhaust Manifold Kit

Fits 2017–2024 Chevrolet Silverado 2500HD / 3500HD with L5P Duramax Engine

Part #: WCF100373

Overview

The Wehrli 17-24 L5P Duramax Billet Exhaust Manifold Kit is a high-performance upgrade designed for diesel truck enthusiasts seeking improved exhaust flow and durability. Crafted from billet steel and TIG-welded for strength, these manifolds replace the factory cast components to reduce restrictions and support enhanced engine efficiency. Ideal for those looking to optimize their vehicle’s exhaust system, these manifolds are engineered to withstand the rigors of heavy-duty use while providing a more responsive and efficient exhaust flow. Whether you're upgrading for performance, reliability, or both, this kit offers a robust solution tailored to your Duramax-powered truck.

Key Features

Designed with high-flow performance in mind, these manifolds feature gasket-matched ports and internal division to maximize exhaust flow. The outlet locations are compatible with OEM-style up pipes, ensuring a straightforward installation process. The billet steel construction provides superior strength and heat resistance, supporting long-term durability under demanding conditions. The kit includes gaskets and ARP hardware for secure mounting and reliable sealing, making it a comprehensive upgrade for your diesel truck’s exhaust system.

Construction & Design

Manufactured from billet steel and TIG-welded, these manifolds are built for maximum strength and heat resistance. The gasket-matched ports and internal division are precisely machined to optimize exhaust flow, reducing backpressure and enhancing engine response. The design ensures compatibility with OEM up pipes, facilitating a seamless fitment with existing exhaust components.

Performance & Response

These billet manifolds help improve exhaust flow efficiency, which can contribute to better turbo response and overall engine performance. The high-flow design supports increased power output and torque, especially when paired with other performance upgrades. The robust construction also helps maintain consistent performance under heavy load and extended driving conditions.

Installation & Fitment

The kit is designed for direct bolt-on installation on 2017-2024 Chevrolet Silverado and GMC Sierra models equipped with the L5P Duramax engine. Proper fitment is achieved using the included ARP hardware and gaskets, ensuring a secure and reliable connection. Professional installation is recommended to ensure optimal performance and fitment.

What’s Included

The package includes billet steel exhaust manifolds, gaskets, and ARP hardware necessary for installation, providing everything needed for a complete upgrade.