The Peterbilt 389 w/ DPF 2011-2013 Models OEM Elbow System 7 Inch Dynaflex Exhaust Package is a practical and efficient solution for your truck's exhaust needs. With a 36" length, this package offers a reliable and durable Bull Horn design, ensuring optimal performance. Designed specifically for Peterbilt 389 models from 2011 to 2013, this OEM Elbow System is a perfect fit. Upgrade your truck's exhaust system with this high-quality package, providing enhanced functionality and improved emissions control.