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Wehrli Custom Fab High Flow Intake Bundle Kit Stage 3 for 2017–2019 Duramax L5P in Brizzle Blue. This comprehensive Stage 3 bundle replaces restrictive factory intake and intercooler piping with large‑diameter aluminum tubing, ceramic‑coated downpipe, and upgraded silicone boots and clamps. Wehrli reports an OEM-diameter 4 in. turbo inlet yielding a 25 HP gain when paired with a Max Effort tune; the kit is bolt-on and made in the USA.
Wehrli 17-19 Chevrolet L5P Duramax High Flow Intake Bundle Kit - Brizzle Blue
