This International LoneStar and ProStar 2011 through 2014 Flex Bellows Kit is a direct replacement for OE number 3859159C1. With a 4-inch inside diameter and 52.6-inch length, this kit includes one exhaust bellow, two clamps, and two gaskets. The metal construction material ensures reliability and long service life. This exhaust flex pipe matches the fit and function of the original pipe to prevent exhaust leaks that result in lost engine efficiency. It fits most International LoneStar and ProStar 2011-2014 models with MaxxForce 13 engine and has undergone vehicle fitment and material testing to ensure proper fit and performance. Trustworthy construction and complete installation make this kit a quality-tested solution for your vehicle.