Straight from our factory floor, we are your premier Chinese exporter for the Cummins QSB4.5 industrial power unit. This 4.5-liter, water-cooled diesel engine features full-authority electronic controls and a high-pressure common rail fuel system, delivering consistent performance and excellent cold-start capability for demanding off-highway environments . With power ratings covering 110–170 hp and a compact, weight-efficient design (wet weight approx. 371 kg), the QSB4.5 offers best-in-class power density and up to 5% better fuel efficiency over mechanical 6-cylinder competitors, significantly lowering total cost of ownership . We supply complete engine assemblies tailored to your specific equipment—whether you need a C-series for your excavator, a G-series for your genset, or a marine-rated variant—with rapid delivery from our Shanghai or Qingdao port. Our team provides professional ECM depopulation services to remove speed or torque limits for stationary applications, ensuring your repower or OEM project receives the right configuration with full technical support .
