Cat C15 ACERT engines are the ideal solution for your demanding operations in the oilfield. Decades of field operation and intense research and development allow Cat C15 ACERT engines to deliver excellent performance with low operating costs and emissions. This is an ideal engine for land mechanical drilling applications such as mud pump drives. Cat C15 ACERT™ Industrial Diesel Engine. Ratings: 328-444 bkW (440-595 bhp) @ 1800-2100 rpm meet China Stage II, U.S. EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards.