Kenworth is expanding the availability of its Paccar TX-12 PRO automated transmission to several models within the company’s medium-duty line. Ranging from Class 7 to light Class 8, the vocational transmission is available on the Kenworth T380 and T480 when matched with the Paccar PX-9 engine, according to a news release.

The PX-9 can be spec’d with peak horsepower ranging between 260 and 380 for on-highway and vocational use; up to 450 hp with 1,250 lb.-ft. of torque for fire service vehicles. 

The TX-12 PRO was designed for rugged service and low-end drive performance applications like dump truck, snowplow, or in chassis-mounted tanker configuration, the company states. It features an extreme duty clutch for low-speed maneuvering, and rock-free mode to help trucks get unstuck in mud or sand. Plus, it has an off-highway calibration tuned for changing soil conditions.

For those applications requiring a PTO, the TX-12 PRO is available with dual openings – a bottom mount 8-bolt and 4-bolt rear mount for a combined 95 hp capacity. The transmission and clutch are both equipped with internal oil temperature sensors. Their temperatures can be displayed on the in-cab 7-inch digital display and can provide driver notifications in situations causing excessive temperatures.

Oil maintenance intervals for the TX-12 PRO are 250,000 miles (402336 km), and the clutch is maintenance-free.