Model: Series 60 12.7 liter DDEC-4 (DDEC-IV) NON-EGR. Engine Serial Number: 06RO722016. Engine Model Number : 6067-MK2E. Full Jake Brake Engine (Front + Rear Jakes). Engine was overhauled in September 2018. Bus decommissioned in July 2021. Current mileage on engine since overhaul 95k miles. Parts used at the time of overhaul were Genuine OEM Reliabilt Parts. Engine was ran in the bus prior to removal and passed quality inspection checklist: Blow by test, Engine coolant temp, Oil pressure test, electronic diagnostic test, and oil analysis test. VIDEO OF ENGINE RUNNING SHOWS A COLD START AND WARM START WITH OIL PRESSURE.