The Allison Motorhome Series 4000MH six-speed transmission is state-of-the-art. Electronic controls provide smooth shifting for exceptional performance and fuel economy and seamless integration with the engine brake. Automatic shifting is self-adjustable for smooth shifts during climbs, descents and virtually any road condition. Additionally, models built after 2011 provide transmission prognostics via the light bar control unit in the cockpit, ensuring driver confidence in transmission oil life and levels, filter life and overall diagnostics.
To review specs and information on particular Allison transmissions, visit their website.