The port tractor market mainly involves operations on national highways, where power performance and fuel economy are of particular concern. Weichai offers dedicated solutions featuring the WP8H, WP10H, WP10.5H, and WP12H series, with displacements ranging from 8 L to 12 L, power outputs from 380 Ps to 500 Ps, and a maximum torque of 2,300 N·m. Specifically optimized for the high-frequency stop-and-start duty cycles and low-load conditions of port tractors, these engines provide rapid low-speed power response to ensure reliable and fuel-efficient transportation.