2011-2016 Duramax Stage 1 High Flow Bundle Kit, WC Fab Grey (Kingsport Grey) (WCF100278-GRY)

Wehrli's Stage 1 airflow bundle for the 2011-2016 LML Duramax: both intercooler pipes, the upper crossover pipe and the high-flow cast Y-bridge in one kit. It replaces every restrictive or leak-prone piece between the turbo and the heads and bolts on with no tuning, so it works on a stock truck as well as a built one.

The 3" driver (hot) side pipe replaces the two-piece 2.5" factory pipe for an 18% flow gain, the one-piece 14-gauge aluminum 3.5" passenger (cold) side pipe replaces the plastic two-piece factory pipe for 23%, and the CNC-machined cast aluminum Y-bridge flows 33% better than stock. Everything connects to the factory throttle valve, grid heater, EGR and intake runners. Includes silicone boots, stainless T-bolt clamps and a billet resonator plate for the OEM intake horn, powder coated in your choice of colour.

Part Number: WCF100278-GRY

• 3" driver (hot) side intercooler pipe, 18% more airflow than stock
• 3.5" one-piece passenger (cold) side intercooler pipe, 23% more airflow than stock
• 3" high-flow upper intercooler crossover pipe
• CNC machined cast aluminum high-flow Y-bridge, 33% more airflow than stock
• Silicone boots with stainless steel T-bolt clamps
• Billet turbo resonator plate for the OEM intake horn included
• Connects to the factory throttle valve, grid heater, EGR and intake runners
• No tuning required, bolt on
• Custom powder coat finish
• Made in USA
• Finish: WC Fab Grey (Kingsport Grey) powder coat

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