The Peterbilt 3S Flex Exhaust Bellow is a practical and reliable solution for your exhaust system needs. Designed to fit most Peterbilt models, this bellow is compatible with both OEM and aftermarket numbers, including M66-7091-0320, M6670910320, 58536, 58536-KIT, and 58536KIT. With its natural finish and 3S Flex type, this exhaust bellow offers durability and functionality. Sold individually, it provides a cost-effective solution for your vehicle's exhaust system, ensuring optimal performance and longevity. Trust the Peterbilt 3S Flex Exhaust Bellow to deliver the benefits you need without compromising on quality.