Introducing the MBRP S6218P OBS 4 Inch Turbo Back AL Exhaust. This superior quality exhaust is designed to give your 7.3 Powerstroke a boost in power and performance, while also lowering exhaust temperatures. It's made from heavy duty aluminized steel for maximum durability, and features mandrel bent tubing and minimal bend degree angles for optimum flow. Installation is quick and easy, with no welding required. In just 1.5-2 hours you'll be enjoying improved performance, fuel economy, and a great new sound. Order your MBRP S6218P OBS 4 Inch Turbo Back AL Exhaust today!