CAT C7.1 Common Rail EFI Engine Assembly, inline 6-cylinder, 7.1L displacement, turbocharged and aftercooled. Specially matched for CAT 320GX, 329D2, 330GC and 336GC excavators. It delivers strong power, low fuel consumption and stable electronic control system. Available in China Stage III and China Stage IV emission versions. New and remanufactured engine assemblies are available.