Daihatsu Infinearth Mfg.Co.,Ltd manufactures and sells marine engines, land engines, and industrial instruments in Japan, China, the rest of Asia, Central America, South America, and internationally. Its marine engine products include propulsion systems, electric propulsion systems, auxiliary systems, dual-fuel engines, and marine engines for nitrogen oxide regulations. Land engines comprise land diesel engines, gas turbines and gas engines for emergency power generation and pumping, and co-generation systems, while industrial instruments include aluminum wheels, oil mist detectors and monitors, and doughnut RD couplings. The company is also involved in real estate leasing; transportation, warehouse management, precision components, and contracting businesses; and solar power generation. Formerly known as Daihatsu Diesel Mfg. Co., Ltd., it changed its name to Daihatsu Infinearth Mfg.Co.,Ltd in May 2025, was founded in 1907, and is headquartered in Osaka, Japan.