C6.6 CAT diesel engine M322D Excavator 6-cylinder diesel engine assembly Turbo engine for construction machinery The C6.6 is a 6-cylinder turbocharged diesel engine suitable for excavators, construction machinery, and other equipment. It boasts strong power, fuel economy, and durability, providing reliable power support for heavy-duty operations. C6.6 Diesel Engine Specifications State Brand New Engine type 6-cylinder water-cooled diesel engine Displacement 6.6 L Bore ×