ZZ Diesel High Flow Exhaust Manifolds with Up-Pipes. Has a 53% greater flow over stock. Manifolds are made from high-quality cast iron. Up Pipes are made from 11 gauge 304 stainless steel.
For 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 GM 6.6L Duramax LB7 LLY LBZ LMM LML
High-Flow Exhaust Manifolds and Up-Pipes have a 53% greater flow over stock. Manifolds are made from high-quality cast iron and the Up Pipes are made from 11 gauge 304 stainless steel. The aircraft grade 304 stainless steel Up-Pipe bellows are high-flow, internally sleeved, and have an increased inner diameter.
Features:
Cast Hi-Sil Moly iron high-flow manifold construction
Significant reduction in exhaust back pressure
Free-flowing stainless steel inner liner bellows
Stainless steel 11-gauge .120-inch wall diameter Up-Pipes
Built in bosses, pre-drilled and tapped 1/8" NPT for EGT gauge