The Freightliner 12.68 Inch Stainless Steel Exhaust Bellow is a practical and reliable product designed to enhance your vehicle's performance. With a 4-2/3 inch outer diameter and 3-1/3 inch inner diameter, this exhaust bellow is constructed from high-quality stainless steel, ensuring durability and longevity. Measuring 12.68 inches long, 5.12 inches wide, and 5.12 inches tall, it is a direct OE replacement for most Freightliner makes and models. With exhaust emission norm EPA 07 and direct OE replacement numbers ABPN49KW3541 and OTR3FE014, this exhaust bellow is a perfect fit for your vehicle.