2025 Peterbilt 337. Compare prices, models, trims, options and specifications between. Available in class 7 truck or tractor configurations, the peterbilt 337 is the clear choice for to take on the toughest jobs whether that’s dry good delivery or tanker.

The peterbilt model 337 is built to take on the big jobs. Available in class 7 truck or tractor configurations, the peterbilt 337 is the clear choice for to take on the toughest jobs whether that’s dry good delivery or tanker.