GM 6.6L Duramax High-Flow Exhaust Manifolds and Up-Pipes Kits 2001-2004 Differential Covers and Parts This muffler utilizes a smaller

This muffler utilizes a smaller 4

Applicable core fee of $125 to be added to check out

or M1 Monotube shocks for tailored performance

Built to spec based on intended use and vehicle modifications

GM 6.6L Duramax High-Flow Exhaust Manifolds and Up-Pipes Kits 2001-2004 Differential Covers and Parts This muffler utilizes a smaller50 States Emissions Legal (E. O. D 701 34). GM 6. 6L Duramax High Flow Exhaust Manifolds and Up Pipes Kits PPE High Flow Manifolds are made from cast, high sil moly. The PPE Up Pipe bellows are internally sleeved, made from aircraft grade 304 stainless steel, and designed with increased inner diameter for higher flow. The entire Manifold and Up Pipe exhaust system are designed to maximize power and flow characteristics, lower exhaust gas temperatures