Paccar Boosts Power and Torque of MX-13 and MX-11 Engines

Kenworth and Peterbilt trucks will offer the 13L and 11L engines with up to 510 hp and 430 hp, and B10 life of one million miles

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Paccar is launching new power, torque and fuel efficiency enhancements to its MX-13 and MX-11 diesel engines for North America in January. The MX-13’s output is increased to 510 hp and 1,850 lb.-ft. of torque and the MX-11 is boosted to 430 hp and 1,650 lb.-ft. of torque. Paccar also added a new MX-11 rating at 335 hp and 1,150 lb.-ft. torque.

The MX engines deliver peak torque at 900 rpm for the majority of engine ratings. Paccar designs MX engines to a B10 life of one million miles. This means 90% of the MX-13 and MX-11 engines are expected to reach one million miles without need for a major overhaul.

“Nearly 50% of Kenworth and Peterbilt trucks delivered to customers in North America this year will be powered by a PACCAR MX engine,” said Landon Sproull, PACCAR vice president.

  • MX engines come standard with remote diagnostics to deliver proactive customer support
  • New single-cylinder air compressor, variable displacement oil pump, and variable speed coolant pump improve fuel economy
  • Oil and fuel filter change intervals extended from 60,000 miles to 75,000 miles
  • Single-canister exhaust aftertreatment system reduces weight by 100 lb., improves serviceability and lengthens service intervals
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