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The Wehrli Stage 1 high-flow bundle for 2013–2018 6.7L Cummins replaces small, crushed factory pipes with heavy-duty 3.5-inch diameter aluminum tubing to improve airflow between the turbo and engine, boosting efficiency, throttle response and turbo spool. Kit includes upgraded silicone boots, stainless t-bolt clamps and is constructed from 14 ga. aluminum. It fits stock trucks without additional modifications and is finished in custom powder coat; made in the USA.
Wehrli 13-18 Cummins 6.7L 3.5 in. Stage 1 High Flow Bundle Kit - Candy Teal
