Wehrli Billet Exhaust Manifold & Up Pipe Kit

Fits 2017–2024 Chevrolet Duramax L5P Diesel Engines

Part #: WCF100226

Overview

The Wehrli Billet Exhaust Manifold & Stainless Up Pipe Kit is designed to replace the restrictive factory cast manifolds on 2017 to 2024 Chevrolet Duramax L5P diesel engines. Crafted for enthusiasts and professionals seeking improved exhaust flow and durability, this kit supports enhanced engine breathing by reducing backpressure and optimizing exhaust gas evacuation. Its robust construction and precise engineering help maintain reliability under demanding conditions while supporting potential performance upgrades.

Key Features

This exhaust manifold and up pipe kit offers a range of technical benefits tailored for diesel performance applications:

• Manufactured from high-strength billet steel with TIG welding for superior durability and precision
• Exhaust port gasket matched and internally divided to optimize flow with both OEM and ported cylinder heads
• Includes 2" stainless steel high-flow up pipes designed for seamless integration with OEM-style components
• Equipped with sensor ports and EGR riser flange to maintain full compatibility with vehicle systems
• Finished in a black ceramic coating rated to withstand temperatures up to 2000°F for enhanced heat resistance
• Comes complete with new gaskets, ARP 12-point fasteners, and assembly lube for straightforward installation

Construction & Design

The kit’s billet steel manifolds are precision-machined and TIG-welded to ensure structural integrity and consistent performance. The internal division and gasket-matched ports reduce turbulence and improve exhaust gas flow dynamics. The black ceramic coating not only provides a sleek appearance but also offers excellent thermal protection, helping to manage under-hood temperatures effectively.

Installation & Fitment

Designed as a direct replacement for factory manifolds on 2017–2024 Chevrolet Duramax L5P engines, this kit includes all necessary hardware and gaskets to facilitate a smooth installation process. The inclusion of ARP 12-point fasteners and assembly lube ensures proper torque and sealing, minimizing installation time and potential leaks.