Wehrli 100226 Billet Exhaust Manifold & Up Pipe Kit | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features: - Fully TIG welded CNC machined construction - Billet steel exhaust manifolds - Black ceramic coating finish - Includes new gaskets - ARP 12PT fasteners - 1/8 NPT port for simple installation - Driver and passenger side up pipe - No tuning required Upgraded Exhaust Manifolds & Up Pipes for GM 6.6L Duramax Unleashing the full power and potential of your 2017-2024 GM 6.6L Duramax equipped truck is going to require some aftermarket modifications. Fortunately, Wehrli Custom Fab offers a great place to start with their Billet Exhaust Manifold and Up Pipe Kit! Both the exhaust manifolds and up pipes featured in this kit were built with smoother bends and larger diameters over stock, helping your engine breathe easier during high-performance applications. With reduced exhaust flow restrictions, you can expect improved turbocharger spool-up times to provide better acceleration and throttle response, especially at lower RPMs. Better exhaust flow also contributes to improved engine efficiency by reducing overall backpressure. This upgrade will also work to lower EGTs during extreme driving conditions, helping protect your critical engine components from excessive heat. The manifolds are exhaust port gasket matched and internally divided for optimal flow with OEM or ported cylinder heads. Premium Construction & Installation Info Wehrli Custom Fab manufactured their Billet Exhaust Manifold Up Pipe kit using only the best materials to ensure unmatched strength and reliability on your GM 6.6L Duramax. Each exhaust manifold comes fully TIG welded with CNC machined billet steel construction which makes it tough enough to handle just about any adventure you have in mind. The manifolds are then finished with a black ceramic coating which is rated for an impressive 1800 degrees Fahrenheit. The up pipes feature impressive 2" diameters and were built from heavy-duty 11 gauge stainless steel to add even more durability to your ride. Wehrli even includes the necessary gaskets, ARP fasteners, and washers required for installation. A 1/8 NPT port is included in the driver's side manifold for installation of an EGT or drive pressure sensor. The installation process itself can be complete in your garage and requires no tuning after it's complete. Fits: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 GM 6.6L Duramax L5P Application Notes: - Will fit on stock trucks, no other modifications or upgrades necessary - Also fits 2019+ L5D Duramax (4500/5500/6500 ) Medium Duty Trucks.