Product Overview The CAT C7.1 Common Rail EFI Engine Assembly is an inline 6-cylinder, 7.1L displacement, turbocharged and aftercooled power unit. It is specially matched for CAT 320GX, 329D2, 330GC, and 336GC excavators, delivering strong power output, low fuel consumption, and a stable electronic control system. Available in China Stage III and China Stage IV emission versions, with both new and remanufactured engine assemblies offered. Technical Specifications Construction