The Peterbilt Model 320 is a low-cab forward truck built for the refuse industry. The huck-bolted aluminum cab features lap seam construction on a zinc-coated steel sub-frame for durability and corrosion resistance. Additionally, bulkhead style doors provide additional watertight performance. 

The Model 320 diesel engine lineup spans from the lightweight, efficient Cummins ISL9 to the powerful Cummins ISX12 with ratings up to 400 horsepower and 1,650 lb-ft. of torque, The Model 320 is ready for the toughest jobs. For applications requiring natural gas fuel, the Model 320 is available with the Cummins Westport ISL G rated at 320 horsepower and 1,000 lb-ft of torque. This spark-ignited engine is capable of running on either Compressed Natural Gas (CNG) or Liquefied Natural Gas (LNG), offering ultimate flexibility in fuel sources. With the flexibility to mount tanks either on the rail or integrated into the body, the Model 320 allows for maximum use of space when integrating a body for a variety of applications.