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The Wehrli Stage 1 High Flow bundle for 2017–2019 L5P Duramax swaps original two-piece pipes for a heavy-duty 3" driver side and 3.5" passenger side aluminum set with smooth mandrel bends. Upgraded CNC flange with double o-rings, reinforced silicone boots and stainless t-bolt clamps improve sealing and durability under boost. Bolt-on with basic tools, fits stock trucks without tuning. Finished in Fine Texture Black; saves $25 versus separate purchase.
Wehrli 17-19 Duramax L5P Stage 1 High Flow Bundle Kit - Fine Texture Black
