2007 (6.7 liter) Dodge, 2500/3500 Filter Back, T-409 Stainless Steel System with5 Inch mirror polished Dual Wall Straight Cut S.S. Tip (all cab and bed configurations). Keeps the factory catalytic converter and particulate filter in stock location.
MB-S6120409 

The MBRP Dodge Cummins 5.9 diesel exhaust system is designed to replace the factory exhaust system for 1994 and newer model years. The system is manufactured of mandrel bent stainless steel tubing and welded hanger components. Every system is packaged to fit any style cab or bed length.

The MBRP Dodge Cummins System will lower your Exhaust Gas Temperature by as much as 200 degrees, while allowing your turbocharger quicker spool up time. This system has been dyno tested to produce as much as 24 horsepower and 53 foot pounds of torque. The horsepower and torque gains are extremely important, but the ability of an exhaust system to lower your exhaust gas temperatures so you can add other performance improvements is of prime consideration for your engine. There are also some mileage gains to be realized, based on your driving style and location.