The Freightliner Replacement Exhaust Pipe is a practical and reliable solution for replacing the OEM part number 04-20001-000. With a 4-inch diameter, this exhaust pipe is designed to fit seamlessly and ensure optimal performance. Made with high-quality materials, it offers durability and longevity. Whether you need to replace a damaged exhaust pipe or upgrade your Freightliner, this product is a cost-effective choice. Trust in its functionality and enjoy the benefits of a smooth-running vehicle.