Other Engine Equipment Manufacturing

Code 333618 covers establishments manufacturing internal combustion engines and closely related equipment, excluding automotive gasoline and aircraft engines. The primary distinction from neighboring codes is that 333618 focuses on the engines themselves and their integral components, while establishments making mechanical power transmission equipment such as clutches, couplings, and bearings used with these engines are classified in Mechanical Power Transmission Equipment Manufacturing. Turbine-based power generation, including steam and gas turbines, belongs in Turbine and Turbine Generator Set Units Manufacturing.