The Caterpillar D350E is an off-highway truck designed for heavy-duty material hauling in mining, quarry, and large earthmoving applications. Built for high-capacity transport on rough terrain, the D350E features a rigid frame, articulated steering, and a diesel powertrain suited to demanding site conditions. It is used to move large volumes of overburden, aggregate, and other bulk materials across construction and extraction sites. The model is part of Caterpillar's off-highway truck lineup and is recognized for its role in high-production haul operations. Specifications may vary by configuration, market, and production year.