International redesigned the Class 6-7 HV Series to increase productivity and reduce equipment downtime. The HV509 and HV 609 come with a Cummins L9 engine and Eaton or Allison transmission, while the heavier-duty HV515 and 615 are compatible with the S13 Integrated Powertrain. Cab durability is enhanced with double-sided galvanized steel and anti-corrosion coating, while integrating the Diamond Logic electrical system, and commonizing components simplify maintenance and upfitting. The hood is 30% easier to open and has a 2-amp light for better visibility.