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New engine ratings for 2019 aim to give Peterbilt trucks more reliability, increased fuel economy

Peterbilt Motor Company (has added two additional ratings to its MX-13 engine family for the 2019 model year, both aimed at increasing uptime and improving fuel economy for truck owners.

The PACCAR MX-13 will now be offered with a multi-torque 455 hp. option with torque ratings between 1,650 and 1,850 lbs.-ft., and a 405 hp. with 1,650 lbs.-ft. of torque.

“Peterbilt and PACCAR Powertrain work closely to ensure Peterbilt customers have the most fuel-efficient options available, and they already benefit from a total weight savings of more than 500 lbs. when spec’ing the full PACCAR Powertrain on the Model 579,” said Peterbilt’s on-highway marketing manager Wesley Slavin. “Peterbilt’s customers have challenged us to find even more ways to maximize fuel economy and these new ratings deliver.”

Peterbilt advises long-haul customers looking for the most fuel-efficient package to consider the PACCAR transmission, PACCAR 40k rear axle along with the new 405 hp. MX-13 with a 1,650 lbs.-ft. torque rating.

The new engine ratings will be available January 2019. 

Brian Straight

Brian Straight leads FreightWaves' Modern Shipper brand as Managing Editor. A journalism graduate of the University of Rhode Island, he has covered everything from a presidential election, to professional sports and Little League baseball, and for more than 10 years has covered trucking and logistics. Before joining FreightWaves, he was previously responsible for the editorial quality and production of Fleet Owner magazine and Brian lives in Connecticut with his wife and two kids and spends his time coaching his son’s baseball team, golfing with his daughter, and pursuing his never-ending quest to become a professional bowler. You can reach him at [email protected].