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Wehrli’s Stage 2 High Flow Bundle for 2017–2019 L5P Duramax upgrades the intake and intercooler plumbing between the turbo and engine using a 4" fabricated intake, larger intake horn and heavy‑duty 14‑ga aluminum 3" driver / 3.5" passenger intercooler pipes with mandrel bends. CNC‑machined flanges with double O‑rings and reinforced silicone boots reduce boost leaks and improve durability. The kit includes an air box with dry filter and pre‑filter cover, stainless t‑bolt clamps, and installs with basic hand tools; bolt‑on and compatible with stock trucks, no tuning required.
Wehrli 17-2019 Duramax L5P Stage 2 High Flow Bundle Kit - Bengal Red
