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.
We are dedicated to continuously improving this site. If you have comments,
questions, or suggestions, please let us know by emailing us at
For iSupplierPortal technical support and questions,
For Logistics questions or information, click
here and you will be
directed to the Navistar Logistics Routing Guide.
For Navistar Defense supplier information, see
For Supplier Scorecard questions or
EnterpriseScorecard@navistar.com or 331-332-SCOR(7267).
For Supplier Quality questions or information,
Learning modules are also available at