Introducing the New PACCAR TX-18 Transmission Series.

At Rush Truck Centers, our mission is to provide you with quality trucks and premier support programs that keep you up and running. That is why we’re excited to soon offer trucks equipped with the new TX-18 PACCAR 18-speed automated series of transmissions. Unveiled by PACCAR in February 2022, every component of the TX-18 transmission series has been engineered to deliver uncompromising uptime and fuel efficiency, reduced weight and quieter operation.

High Performance for Heavy Loads

The new PACCAR TX-18 series.  These purpose-built, high-performance, automated transmissions combine the efficiency, weight savings, and sophisticated controls of the TX-12 with toughness to conquer heavy duty on- and off-highway jobs.  The TX-18 and TX-18 Pro have revolutionary features designed to help get the job done.

PACCAR TX-18 Transmissions


• Up to 140,000 lbs. GCWR when combined with MX engine

• Cooler-less design available for GCWR <110k lbs.

• Up to 2% fuel economy improvement and 225 lbs. lighter when compared to Ultrashift Plus

• Best in class PTO functionality with 160 HP available and dual PTO standard

• Twin countershaft design with helical gears for higher engine torque

• 1 to 6 configurable reverse speeds

• Longer maintenance intervals — up to 500,000 miles depending on application

View TX-18 Spec Brochure
Line up of Peterbilt trucks

Contact Us Today to Learn More.

If you’re interested in learning more about the TX-18 and TX-18 PRO, contact us by clicking the button below.  Our expert sales representatives are available to help answer any questions.

Request Information