This bellow pipe is a replacement for the Kenworth and Peterbilt M66-6542-0335 OEM part numbers. Sold individually, it is a practical and cost-effective solution for those in need of a replacement. Its durable construction ensures long-lasting use, making it a reliable choice for truck owners. The bellow pipe's compatibility with specific models ensures a perfect fit, making installation quick and easy. Upgrade your truck's exhaust system with this high-quality bellow pipe.