The M33 series products are derived from the original products of Baudouin (France). With a history of over 100 years, Baudouin has long been a major supplier of diesel engines and generator sets for the French military. Acquired by Weichai in 2008, it is now a wholly-owned subsidiary of Weichai Group. After localized development, the performance of the M33 series products has been comprehensively enhanced.

Featuring low fuel consumption, a long overhaul interval, and high reliability, these products are widely used in various types of ships, including cargo ships, offshore fishing boats, official ships, and passenger ships. Their power range is 368kW - 1103kW, and the speed range is 1500 - 1800rpm.