The 12.9-liter Paccar MX-13 engine is designed to meet the demands of heavy-duty truck applications. The engine is available for Kenworth Class 8 models, including the Kenworth T660, T680, T700, T800 ...
Kenworth's 2010 lineup of Medium-duty trucks will be equipped with Paccar PX-6 (left) and Paccar PX-8 (right) engines.