The Freightliner 27.6 Inch Stainless Steel Exhaust Bellow is a durable and reliable product designed to enhance your vehicle's exhaust system. With a 4-4/5 inch outer diameter and 3-7/8 inch inner diameter, it offers a perfect fit for most Freightliner makes and models. Made from high-quality stainless steel, this exhaust bellow ensures long-lasting performance and is directly replaceable with OE parts. It meets the EPA 10 exhaust emission norm and comes with direct OE replacement numbers for easy installation. Practical and efficient, this exhaust bellow is a must-have for any Freightliner owner.