6C 6CT 6CTA Engine Overhaul Rebuild Kit for Cummins Diesel 8.3L Tractor Truck Excavator Repair Parts. 6C 6CT 6CTA Engine. Note: Please ensure the measurements of your old piston. Is same with ours, if it’s different, you can send to us check. 1 Set of Overhaul Gasket Kit. Set Rings For 6 Pistons. 1 Set of Main Bearings STD. 1 Set of Rod Bearings STD. 1 Set of Thrust Bearings STD. Cummins 6C 6CT 6CTA Diesel 8.3L Tractor Truck Excavator. Otherwise deal is final. We will be happy to resolve any issues you may have in a cordial and friendly manner. We appreciate your Postive Feedback, and will do the same in return.