Stewart & Stevenson is a leading provider of Allison commercial-duty transmissions that are at work in oilfield packages, haul and dump trucks, long-distance trucks, fire apparatus, intercity bus and recreational vehicles. We provide hybrid-propulsion systems that enable transit buses to meet state and federal emissions requirements. Our transmission aftermarket support capabilities include repower and rebuild for all applications, readily available parts, and 24/7/365 service at 17 locations across the United States.
When you’re looking for a replacement for the Allison transmission for your on-highway or off-highway application, turn to the experts at Stewart & Stevenson, an authorized distributor of Allison transmissions since 1973. Our rebuilt Allison transmissions meet factory-specifications and can save you up to 50 percent over new replacement costs.
Our certified technicians have all the necessary tools and training required to meticulously rebuild an Allison transmission using genuine Allison parts for quality you can depend on. When you need a rebuild, our professional technicians can remove your transmission, replace it or rebuild it, and get your equipment back to work as quickly as possible. All of our rebuilt Allison transmissions are thoroughly dyno-tested to ensure they meet Allison’s factory standards before our technicians install it in your application. Our rebuilt Allison transmissions meet the latest specifications and carry a standardized warranty accepted by Allison dealers and distributors nationwide.