The Peterbilt 13.39 Inch Stainless Steel Exhaust Bellow is a reliable and practical product that offers numerous benefits. With a 4-2/3 inch outer diameter and 4 inch inner diameter, it is designed to fit most Peterbilt makes and models. Made in the USA with stainless steel construction, this exhaust bellow is directly replaceable with OE parts, ensuring a seamless installation. It comes with clamps and gaskets included, making it even more convenient. With a length of 13.39 inches, width of 4.92 inches, and height of 4.92 inches, this exhaust bellow meets EPA 10 exhaust emission norms. It is a high-quality product that guarantees durability and performance.