DETROIT® ENGINES DRIVE AXLES STEER AXLES THE INTEGRATED DETROIT® POWERTRAIN IN THE FUEL EFFICIENT BY DESIGN Detroit® seamlessly integrates its engines, transmissions, and axles for improved fuel efficiency. The Integrated Detroit Powertrain combines with the aerodynamic improvements of the Freightliner® Cascadia® and Western Star® 57X to produce the industry’s next generation of fuel economy. Integrated Detroit Powertrain Ratings DD15 GEN 5 Power DETROIT® ENGINE Torque Displacement Transmission DETROIT® DT12® TRANSMISSION Direct Drive (available with 2.16, 2.28, and 2.41 Ratios) Over Drive (available with 2.64 and 2.85 Ratios) Torque Input Cruise Control Intelligent Powertrain Management (IPM) 40,000 lb Tandem with Axle Lubrication Management (ALM2) 2.28 Rear Axle Ratio* 2.16 Rear Axle Ratio* 2.85 Rear Axle Ratio 2.64 Rear Axle Ratio 20,000 lbs Single DETROIT® DRIVE AXLE 20,000 lbs Tag 2.28 Rear Axle Ratio 2.85 Rear Axle Ratio 23,000 lbs Single 4x2 Configuration 2.28 Rear Axle Ratio DETROIT STEER AXLE Detroit Steer Axle *2.28 or 2.16 rear axle ratio requires driveline changes and trans oil cooler 2.85 Rear Axle Ratio

DD15® GEN 5 AND DD13® GEN 5 ENGINE We all know slowing down is the best way to save fuel, so we’ve designed an engine that can cruise at the same road speed at lower RPMs, reducing fuel consumption and friction. This is made possible by integrating our fastest-ever tandem axle and made easy with our smooth-shifting DT12, making the Cascadia and 57X even more fuel efficient. • Dropping engine speed reduces the number of fuel injections, dramatically improving fuel economy • Integrated with DT12® automated manual transmission and fast axle ratio, this engine torque curve keeps you in top gear longer...