The 2021 Paccar MX-11 and Paccar MX-13 engines for Kenworth’s Class 8 truck lineup feature re-designed internal components to enhance fuel economy.
Peterbilt Delivers Model 579 with 250,000th Paccar MX Engine
Peterbilt delivered a Peterbilt Model 579 equipped with the 250,000th Paccar MX engine produced for North America to longtime customer TCW.