Cat C18 ACERT engines are the ideal solution for your demanding operations in the oilfield. Decades of field operation and intense research and development allow Cat C18 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 C18 ACERT™ Industrial Diesel Engine. Ratings: 429-522 bkW (575-700 bhp) @ 1800-2100 rpm meet China Stage II, U.S. EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. Ratings: 570-597 bkW (765-800 bhp) @ 1800-2100 rpm meet U.S. EPA Tier 2 equivalent emission standards.