Wehrli High Flow Bundle Kit Stage 3 for 2011-2015 D-Max LML Cat Yellow Cat Yellow 100505-CAT

The Wehrli 100505-CAT Stage 3 High Flow Intake Bundle Kit for 2011-2015 LML Duramax Diesel Chevrolet Silverado and GMC Sierra 2500HD/3500HD combines a Stage 2 High Flow Bundle and a 3-inch Stainless Down Pipe. It features a 4-inch aluminum intake pipe, a custom air box with a dry filter, a 4.8-inch cast aluminum turbo intake horn, and 3-inch and 3.5-inch intercooler pipes. The kit also includes an LML Y-Bridge Kit, replacing the OEM upper intake manifold with a CNC-machined cast aluminum intake bridge (40% more airflow) and a 3-inch fabricated aluminum upper crossover intercooler pipe (20% larger than stock), improving total airflow by 33%.