Stewart & Stevenson is a manufacturer and distributor of products and services for the oil and gas, marine, construction, power generation, transportation, mining and agricultural industries. The company was founded in 1902 and is headquartered in Houston, Texas. Stewart & Stevenson's products include engines, transmissions, power generation equipment, and well service pumps. The company also provides aftermarket parts and services, including repair and maintenance, and rental equipment. Stewart & Stevenson operates in the United States and internationally.