(USED) AT Allison MD3060 Transmission assembly. Serial #6510274460 P/N: E000871 Truck: 2000 Chevrolet C8500 Engine: Caterpillar 3126 To find out more about this Transmission give us a call. We ship worldwide! Complete Recycling Group (CRG) 929 W Pulaski Hwy Elkton, MD 21921