Caterpillar 3412C-V12 OEM Engine Complete Non Running Core 12 Cyl Diesel ESN: 73W10456 AR# N/A (no data plate) CTRL# XC44400 BCN: 2W4857 Industrial. Output: 580-1050HP@ 1800-2100rpms. Twin Turbocharged/ After cooled. Turns over 360 degrees. Selling as is (refer to pictures). Overhaul kits available. Oil pan and one exhaust manifold unbolted but is included with engine. No starter.