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Wehrli’s Stage 2 4" intake and intercooler upgrade for 2017–2019 L5P Duramax replaces restrictive factory parts with a fabricated aluminum intake, air box and heavy‑duty 3" driver / 3.5" passenger intercooler pipes. The assembly uses CNC‑machined flanges with double O‑rings, reinforced silicone boots and stainless t‑bolt clamps to improve sealing and durability. Includes dry filter with pre‑filter cover, installs with basic hand tools and fits stock trucks without tuning.
Wehrli 17-19 Duramax L5P Stage 2 High Flow Bundle Kit - WCFab Grey
