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Welcome to the Navistar Supplier Network

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 iSupplierPortal technical support issues, email

For Logistics questions or information, call 800-323-4338 for assistance from the XPO Logistics Center, or click here for a detailed contact list.

For Navistar Defense supplier information, see

For Supplier Scorecard questions or information, email

For Supplier Quality questions or information, email  Learning modules are also available at

For Conflict Minerals questions or information, email

For Electronic Payments Migration Initiative questions or information, click here

For IMDS questions or information, email

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