Flowmaster 50 Series Delta Flow Chambered Muffler TOPS ensuring that you get the

ensuring that you get the brightest illumination possible without draining your vehicle's electrical system

level profile with a front-to-rear stance that eliminates the factory rake

2006-2016 Duramax

Part number 421026

It eliminates potential low fuel rail pressure DTC codes P1093 or P0087 (low fuel rail pressure during power enrichment) that are caused by an insufficient pressure relief valve (PRV) spring pressure

Flowmaster 50 Series Delta Flow Chambered Muffler TOPS ensuring that you get theThe three chamber design utilizes Flowmaster's Delta Flow technology along with an internal tuning chamber to reduce sound inside the vehicle. Provides the same performance and exterior tone characteristics as the two chamber, but with less interior resonance. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.