The Navistar Replacement Pipe is a practical and reliable solution for replacing the OEM part number 1657101-CI. With a 5" diameter and aluminized construction, this inlet pipe fits most Navistar 9700 makes and models. Designed to be durable and long-lasting, this replacement pipe offers a seamless fit and ensures optimal performance. Sold individually, it provides a cost-effective solution for maintaining and repairing your Navistar vehicle. Trust in the quality and functionality of this Navistar Replacement Pipe to keep your vehicle running smoothly.