4" Cat Back Single | 2001-2004.5 GM 2500/3500 6.6L DURAMAX

Constructed out of 16 gauge aluminized steel or T409 Stainless, this exhaust system is designed to simplify installation with included clamps, preweld contour bends and improved flanges. Enjoy a noticeable boost in performance, lowered EGTs and amplified air flow with this Mel's system. For powerhouse performance, Mel's delivers - horsepower you can hear!

Features:

• Ease of installation
• Contour Bent Hangers
• TorcTite® Clamps
• Retains for Cat for Emissions
• No Bungs
  
• Fits Cab/Box Configurations: EC-CC/SB-LB-Dually