Magnaflow Pro-Series performance exhaust systems are entry-level performance diesel systems featuring a satin finish, a 100 percent stainless steel muffler with a straight-through design, stainless steel band clamps, OEM-style barbed hangers, and 4 in. or 5 in. mandrel-bent stainless steel tubing. These MagnaFlow Pro-Series diesel performance exhaust systems provide significant gains in horsepower, torque, improved fuel economy, and a lower EGT (exhaust gas temperature). All MagnaFlow exhaust systems are factory-checked for proper fitment and dyno-tested to verify performance gains. These kits include all necessary installation hardware. They're backed by MagnaFlow's lifetime warranty, so you will be able to enjoy a rich, powerful sound--from now on!