The Kenworth 6 O.D Inch Reduced to 5 Inch Left Side Chrome Replacement Pipe is designed for newer Aerocabs with DUAL Round Catalyst/Mufflers Mounted Underneath. This chrome replacement pipe features a 6-inch reduced to 5-inch size, specifically for the left side. It is sold individually and fits a 45-inch battery box, making it compatible with most Kenworth makes and models. With its practical design and easy installation, this replacement pipe offers a reliable solution for enhancing your truck's exhaust system.