Stage 1 High Flow Bundle Kit for 2025-2026 6.7L Cummins improves airflow between the turbo and the engine for improved efficiency, throttle response, and turbo spool-up. Eliminates weak points in the factory design - angled boots and plastic Driver / Cold Side Intercooler Pipe that can lead to boost leaks or complete failures in hard-working and high-performance applications.
Replaces the poorly flowing factory 2.75" hot side and 3.25" cold side pipes with Wehrli's heavy-duty, high-flow 3.5-inch-diameter pipes. The WCFab kit includes upgraded, high-quality silicone straight boots that withstand higher pressure and temperatures than OEM parts, increasing reliability and eliminating blown factory boots. Made in the USA from high-strength, heavy-duty 14 ga. Aluminum tube with smooth, aerodynamic mandrel bends for increased durability and optimized flow.
Full assembly finished in your choice of WCFab's signature custom powder coat colors for a look as unique as your truck.
Installs with basic hand tools. Compatible with stock trucks, no tuning required.
