The PACCAR MX-13 is rated up to 500 hp and is the only 13-liter class engine rated up to 1,850 lb-ft of torque. It is available for Kenworth Class 8 models, including the T660, T680, T700, T800 ...

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.

Paccar's low NOx MX-13 engine is available in Peterbilt Models 579, 567, and 589 trucks, and Kenworth's T680, T880, and W990 trucks. The engine meets CARB regulations with redesigned internal ...

Tweet this The optimized powertrain combination of the PACCAR MX-13 engine integrated with the Eaton Fuller Advantage™ transmission provides up to a 2 percent fuel efficiency enhancement.