High Flow Exhaust Manifolds with Up-Pipes 17-25 Duramax L5P

This stainless steel exhaust manifold and up-pipe replacement kit is designed to meet OEM specifications for 2017–2021 Chevrolet Silverado and GMC Sierra 2500HD/3500HD trucks with the 6.6L Duramax L5P engine. Precision-machined and welded from corrosion-resistant 304 stainless steel, each component ensures durability and reliable performance under high diesel temperatures. All mounting points match original equipment, enabling straightforward installation without any modifications or affecting the factory emission control system. Ideal for routine service and replacement of worn exhaust parts, this kit maintains your vehicle’s performance and longevity.