CATERPILLAR ENGINE C6.4 ACERT. VERY HARD TO FIND. This ENGINE has been expertly FULLY REMANUFACTURED, ensuring it’s quality and reliability. Take advantage of this opportunity to upgrade your excavator’s power with this top-of-the-line CATERPILLAR engine. This ENGINE include the ECM properly PROGRAMMED and ready to go to work IMMEDIATELY. LEAD TIME: 6 to 8 WEEKS.