View 3 Photos View 0 Videos 2019 Cummins MX13 12.9L Engine for a Peterbilt 579 Newly Listed Contact for price CUMMINS / PACCAR MX13 12.9L, PRE-TESTED DIESEL ENGINE, 455 HP @ 1600 RPM, 2018 EPA See it run here: https://youtu.be/dRJEfXZS62A ConditionUsedFits To Make(s)PETERBILTFits To Model(s)579Stock NumberMT4201270 MLS Number14433604CategoryEngines Last Updated6/17/2026 LocationEnfield, CT, US Sold ByCamerota Truck Parts (855) 750-___ SHOWNUMBERCall Seller Email Seller Save More Info