The Peterbilt Exhaust Bellow, designed for OEM Number M66-7091-0320, is a practical and reliable solution for most Peterbilt models. With its natural finish and sold individually, this exhaust bellow fits seamlessly into your vehicle's system. It is compatible with both OEM and aftermarket numbers, including M66-7091-0320, M6670910320, 58511, 58511KIT, and 58511-KIT. This product offers durability and functionality, ensuring optimal performance for your Peterbilt truck.