2011-2016 Duramax Stage 2 High Flow Bundle Kit, Semi Gloss Black (WCF100439-SGB)

Wehrli's Stage 2 airflow package for the 2011-2016 LML Duramax: the Stage 1 bundle plus the Stage 2 cold air intake in one kit. It replaces the restrictive cast Y-bridge, both intercooler pipes, the plastic intake and the intake horn, so every restriction and leak point between the air filter and the heads is gone, and it bolts on with no tuning.

Flow gains over stock: 4" intake 37%, 4.8" intake horn 5.6%, 3" driver (hot) side pipe 18%, 3.5" passenger (cold) side pipe 23%, CNC-machined cast aluminum Y-bridge 33%, plus a 3" upper crossover pipe. The air box and lid are 10-gauge aluminum with a dry filter and pre-filter cover. Silicone boots and stainless T-bolt clamps included. Powder coated in your choice of colour.

Part Number: WCF100439-SGB

• 4" intake pipe with dry filter and pre-filter cover, 37% more airflow than stock
• Air box and lid formed from 10-gauge aluminum sheet
• 4.8" intake horn, 5.6% more airflow than stock
• 3" driver (hot) side intercooler pipe, 18% more airflow than stock
• 3.5" passenger (cold) side intercooler pipe, 23% more airflow than stock
• 3" high-flow upper intercooler crossover pipe
• CNC machined cast aluminum Y-bridge, 33% more airflow than stock
• Silicone boots and stainless steel T-bolt clamps
• No tuning required, bolt on
• Custom powder coat finish
• Made in USA
• Finish: Semi Gloss Black powder coat

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