Daihatsu Diesel Mfg. Co., Ltd. manufactures and sells marine engines, land engines, and industrial instruments in Japan and internationally. Its marine engine products include propulsion systems, electric propulsion systems, auxiliary systems, and dual-fuel engines, as well as marine engines for nitrogen oxide regulations. The company's land engines comprise land diesel engines and gas turbines/gas engines for emergency power generation/pumping; and co-generation systems. Its industrial instruments include aluminum wheels, oil mist detectors and monitors, and doughnut RD couplings. The company was founded in 1907 and is headquartered in Osaka, Japan.