Navistar Defense LLC is a Chicago-based manufacturer of commercial trucks, buses, engines and parts. The company specialises in fuel-efficient heavy-duty vehicles designed for industries including construction, towing, refuse collection and long-haul transport. They also offer a range of support services including financing, warranties, parts supply and maintenance through their dealer network. Referrals work well for fleet operators and businesses needing reliable commercial vehicles, or for those seeking to transition to more fuel-efficient or electric transport solutions.