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Stewart & Stevenson is currrently a manufacturer and distributor of products and services for the oil and gas, marine, construction, power generation, transportation, mining and agricultural industries.
In its previous business iteration the company competed for the US Army’s new M939A2 5-ton vehicle program, the contract was awarded to BMY in 1985. In the 1990s the company was awarded a contract to build $1.2 billion of 2½ and 5-ton (FMTV) trucks for the US Army.
In 2006, the vehicle division was sold to Armor Holdings. On May 7, 2007 BAE Systems announced its subsidiary BAE Systems Inc. was to purchase Armor Holdings for US$4.1 billion. Stewart & Stevenson was merged into BAE Systems Land and Armaments, alongside the previous United Defence purchase of FMC and BMY.