Allison transmissions are trusted worldwide for their durability, reliability, and smooth performance across on-highway and off-highway applications. As an Allison Authorized Distributor, W.W. Williams provides complete lifecycle support for Allison products — including transmission and parts sales, installation, diagnostics, maintenance, repairs, rebuilds, and warranty services.
With a partnership spanning more than five decades, W.W. Williams supports a wide range of vehicle applications, from school buses and transit fleets to fire trucks, construction equipment, and motorhomes. Our certified technicians utilize OEM software, diagnostic platforms, and Allison-approved training programs to ensure every transmission operates at peak performance.
Whether you manage a municipal fleet, operate emergency vehicles, or rely on specialty equipment, W.W. Williams delivers Allison-authorized expertise designed to maximize uptime, reliability, and long-term productivity.
The W.W. Williams and Allison Authorized Partnership
W.W. Williams has maintained a long-standing partnership with Allison dating back to the 1970s and today serves as an Allison Authorized Distributor across numerous locations in the United States and Mexico. Branch capabilities vary by region and may include combinations of transmission sales, warranty service, diagnostics, maintenance, mobile service, rebuilds, and overhaul support.
Our authorization provides access to Allison OEM systems, tools, and training requirements. Most branches maintain certifications for Allison 10K Maintenance, 10K Overhaul, 9-Speed Maintenance & Overhaul, and Fluid & Filter Replacement. Select locations also support Hybrid H40/50 systems, eGen Flex™ and eGen Power® electric propulsion platforms, and 5000–9000 Off-Highway transmission models.
Through this partnership, W.W. Williams delivers drivetrain solutions backed by Allison’s global reputation for engineering excellence.
