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Wehrli Custom Fab Stage 3 high‑flow bundle kit for 2017–2019 Duramax L5P in gloss white integrates the Stage 2 intake improvements with a 3.5" ceramic‑coated downpipe. The combined package upgrades intake horn diameter, intercooler piping and exhaust flow to improve turbo efficiency and response. It retains factory sensor locations, uses heavy‑duty silicone boots and t‑bolt clamps, and installs without requiring tuning.
Wehrli 17-19 Chevrolet L5P Duramax High Flow Intake Bundle Kit - Gloss White
