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The WCFab Stage 3 High Flow Bundle for 2020–2025 Duramax L5P combines high‑flow intake and intercooler piping with a 3.5" ceramic‑coated downpipe and a larger 4" intake path to replace restrictive factory parts. The kit uses reinforced silicone boots, stainless t‑bolt clamps, CNC flanges with double O‑rings and heavy‑duty aluminum tubing to reduce boost leaks and improve airflow. It’s a bolt‑on assembly that retains factory sensor locations and is made in the USA.
Wehrli 2020-2024 Duramax L5P Stage 3 High Flow Bundle Kit WCFab Grey
