The purpose of this website is to provide a responsive, secure environment within which Navistar and the Supply Chain can partner in innovation to achieve world-class material, cost, quality, and delivery performance.



For notifying Navistar of data breaches, email NAVCERT@NAVISTAR.COM

Please Read : Starting on October 23rd, 2020 you will be prompted to complete Contact Method Registration. Refer: Update: Review Contact Method Registration Communication under "What's New" section dated 10.06.2020

For Procurement’s Source to Contract Portal questions or information, email S2CHelp@Navistar.com. For direct access to the Portal, click here.

For iSupplierPortal technical support issues, email suppliersupport@navistar.com

For Logistics questions or information, call 888-518-6388 for assistance from the Ryder Control Tower , email them at NAV@ryder.com, or click here for a detailed contact list.

For Navistar Defense supplier information, see www.navistardefense.com/supplier

For Supplier Scorecard questions or information, email EnterpriseScorecard@navistar.com.

For Supplier Quality questions or information, email ISQ@navistar.com.  Learning modules are also available at Navistar’s Suppliers Training. Reference the Accessing the Supplier Quality Training Portal document in the document list on the Supplier Quality page.

For Conflict Minerals questions or information, email Conflict.Minerals@navistar.com

For Electronic Payments Migration Initiative questions or information, click here

For IMDS questions or information, email IMDS.Submissions@navistar.com