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Wehrli Custom Fab Stage 1 High Flow Bundle in WCFab Red for 2011–2016 LML 6.6L Duramax Silverado or Sierra 2500/3500HD improves airflow by replacing restrictive OEM components. The kit features a CNC cast aluminum Y‑bridge, larger 3" and 3.5" intercooler pipes, upgraded silicone boots with T‑bolt clamps and a billet turbo resonator plate. Bolt‑on installation maintains OEM throttle and EGR compatibility.
Wehrli 11-16 Duramax LML High Flow Intake Bundle Kit Stage 1 - WCFab Red
