A new heavy duty 16 cylinder diesel engine producing 1600 brake horsepower in the turbocharged and aftercooled version has been designed, developed, and introduced into production. This engine is an extension of the K series of engines having 6¼ in. bore and 6¼ in. stroke giving a total displacement of 3067 cu. in. The design emphasizes maximum utilization of common parts and tooling. Design details of components unique to the KTA-3067 engine are covered as well as development activities and the reliability assessment program. Future development programs to uprate the engine to 1800 brake horsepower are described.