2017 Mack TMD12AD Transmission Assembly

Mack mDRIVE XHD Transmission Direct 12 speed automatic.| TMD12AD mDRIVE is a specific model of Mack Trucks' 12-speed automated manual transmission, known for its efficiency, driver comfort (no clutch pedal), and seamless shifting, featuring direct drive, integrated with Mack engines for highway and vocational use, offering performance modes, and available with advanced features like predictive cruise control. The "D" in TMD12AD signifies a Direct Drive (vs. Overdrive "O"),