Allison Transmission Holdings Inc. is a global designer, manufacturer and seller of fully automatic transmissions and hybrid propulsion systems for commercial duty vehicles and off-highway equipment. The company’s products are engineered to improve fuel efficiency, reduce emissions and enhance performance across a broad range of industries. Allison’s core transmission portfolio serves applications such as on-highway trucks and buses, medium- and heavy-duty commercial vehicles, and military ground vehicles.
In addition to conventional automatic transmissions, Allison offers advanced hybrid systems that integrate electric motors with mechanical transmission components. These systems are tailored for stop-start urban buses, refuse trucks and other vocational vehicles that benefit from regenerative braking and electric-assist capabilities. The company also provides aftermarket parts, remanufactured transmissions and technical support to keep fleets operating with minimal downtime.
The roots of Allison Transmission date back to 1915 with the founding of the Allison Engineering Company in Indianapolis. After its acquisition by General Motors in 1929, Allison operated for decades as a key GM division, pioneering innovations in torque converter and planetary gearset design. In June 2007, Allison was spun off as an independent, publicly traded company listed on the New York Stock Exchange under the symbol ALSN, marking a new chapter focused exclusively on transmission technology and lifecycle support services.
Today, Allison Transmission maintains manufacturing facilities and technical centers across North America, Europe, Asia and South America, supported by a global network of distributors and service partners. The company is led by President and Chief Executive Officer David C. Graziosi, whose leadership emphasizes strategic investments in electrification, digital diagnostics and customer service. Allison continues to collaborate with original equipment manufacturers worldwide to develop driveline solutions that meet evolving regulatory standards and operational demands.
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