The Freightliner 18.11 Inch Long Stainless Steel Exhaust Bellow is a practical and reliable product designed to enhance your vehicle's exhaust system. With a 4-2/3 inch outer diameter and 4 inch inner diameter, it offers a perfect fit for most Freightliner makes and models. Made from high-quality stainless steel, this exhaust bellow ensures durability and longevity. It measures 18.11 inches long, 5.04 inches wide, and 5.04 inches tall, providing optimal performance. With direct OE replacement numbers A04-25023-018 and OTR3FE022, it can be easily replaced with original equipment parts. This exhaust bellow complies with EPA 07 exhaust emission norms, making it an ideal choice for your vehicle.