The Freightliner Replacement Elbow is a practical solution for replacing the OEM part number 04-16639-001. With a 5-inch diameter, this replacement elbow is designed to fit seamlessly into your Freightliner vehicle. It is sold individually, making it a cost-effective choice for maintenance and repairs. Its reliable construction ensures durability and long-lasting performance. Upgrade your vehicle's exhaust system with this high-quality replacement elbow, providing improved functionality and efficiency.