The Freightliner 12.2 Inch Long Stainless Steel Exhaust Bellow is a reliable and practical product designed to enhance your vehicle's performance. With a 4-2/3 inch outer diameter and 3-1/3 inch inner diameter, it ensures a perfect fit for most Freightliner makes and models. Made from high-quality stainless steel, this exhaust bellow is built to last and withstand the test of time. It is directly replaceable with OE parts, making installation hassle-free. With its EPA 07 exhaust emission norm compliance, you can trust that this product meets the highest standards. Upgrade your vehicle's exhaust system with this durable and efficient exhaust bellow.