🚛 Meet the 4000 Series™: Power in Every Detail The 4000 Series™, takes all the great features of the 3000 Series™—torque converters, electronic gears, wet clutches, retarder options, sump options, and PTO options—and scales them up for heavy-duty performance. With its larger size and ability to handle more torque, the 4000 Series™ is designed for tough jobs where size truly matters. 💡 Want to discover how the 4000 Series™ revolutionizes heavy-duty applications? Stay tuned to our #AllisonInnova

Introducing Allison’s TES 668™—the next generation of transmission fluid. Coming in 2021, this innovative propulsion solution gives your 1000-4000 Series transmission enhanced drain intervals, superior shift quality, enhanced performance and more. Full details at www.allisontransmission.com/TES668. | Allison Transmission

Disassembled part-by-part to clean, qualify and test each component – it’s a promise that you’ll only get with an Allison ReTran®. Take an inside look at our comprehensive process of creating an Allison ReTran. Learn more at https://fal.cn/3AfA6 | Allison Transmission

365K views · 34 shares | Allison Automatics are climate-tested in the coldest environments to make sure they're ready when you are. | Allison Transmission | Facebook