High Flow Bundle Kit Stage 2 for 2006-2007 Duramax LBZ WCFab Grey

Stage 2 upgrade combining a Stage 1 High Flow Bundle and Stage 2 intake kit for 2006-2007 LBZ 6.6L Duramax engines in Chevrolet Silverado and GMC Sierra 2500/3500 HD trucks. Increases airflow for improved efficiency, throttle response, and turbo spool up. Replaces restrictive factory plastic parts with fabricated aluminum components. Includes a 4-inch aluminum intake pipe, air box enclosure with dry filter assembly, 4.8-inch intake horn, 3-inch hot side intercooler pipe, 3.5-inch cold side intercooler pipe, and a 3-inch Y-bridge kit. Retains factory connection points and sensors, requires no tuning, and is a bolt-on installation. Compatible with stock trucks. Made in the USA.