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Wehrli’s Stage 1 High Flow Bundle for 2017–2019 L5P Duramax replaces the factory intercooler pipes with heavy‑duty 3" driver and 3.5" passenger aluminum pipes, removes OEM weak points, and adds reinforced silicone boots, stainless t‑bolt clamps and a CNC machined flange with double O‑rings to reduce boost leaks. The full assembly is finished in WCFab Grey, installs with basic hand tools, and fits stock trucks without requiring tuning.
Wehrli 17-19 Duramax L5P Stage 1 High Flow Bundle Kit - WCFab Grey
