WCFab Stage 3 upgrade for the 2020-2024 L5P Duramax combines our Stage 2 High Flow Bundle and 3.5 in. Down Pipe into a single package providing increased air and exhaust flow for your turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can contribute to lost power, boost leaks, and complete failures in hard working and high performance applications.
– 4 in. Aluminum Intake Pipe– 3.5 in. Intake Horn with PCV Port and Surge Ring – Air box enclosure with dry filter assembly and Outerwears pre-filter cover – Installation hardware, 4 in. silicone hump boot and stainless t-bolt clamps – 3 in. Hot Side Intercooler Pipe – 3.5 in. Cold Side Intercooler Pipe – CNC Machined Flange and black anodized billet aluminum adapter with Double O-Rings provides an improved sealing surface to eliminate boost leaks – OEM Clip Ring Design at Y-bridge connection replaced by high quality silicone boot and stainless steel t-bolt clamps for improved sealing and ability to hold higher boost pressures without leaking – Silicone Boots – Stainless Steel T-Bolt Clamps – O-Rings – Intercooler Outlet Clip – Retains factory connection points and sensors – NO Tuning required, bolt on! – Will fit on stock truck no other modifications or upgrades necessary! – Durable Powder Coat Finish