The Freightliner Replacement Exhaust Extension is a practical solution for replacing the OEM part number 04-23273-006. With a 3.5 diameter, this exhaust extension is designed to fit seamlessly and enhance the performance of your Freightliner. Sold individually, it offers a cost-effective option for maintaining your vehicle's exhaust system. Its durable construction ensures long-lasting reliability. Upgrade your Freightliner with this replacement exhaust extension for improved functionality and efficiency.