PACCAR precision-built transmissions are engineered from the ground up for intuitive operation and superior performance.  Their intelligent features use look-ahead technology to execute shift decisions that improve fuel economy and driver comfort.

PACCAR TX-18 Transmission

The new PACCAR TX-18 transmission delivers productivity, efficiency, and uptime to conquer tough jobs.  

  • Twin countershaft design with helical gears and large bearings optimized for higher engine torque and weights
  • Best overall gear ratio coverage with small, even steps for smooth shifts and excellent performance in all driving conditions
  • Extreme duty clutch allows more controlled clutch slip and increased maneuvering time at higher loads

Optimized for integration with MX Engines and ideal for on-highway high performance and light vocational applications.  PACCAR also offers the TX-Pro which allows for on- and off-highway high performance, severe service, and heavy vocational needs.

TX-18 Features

Intelligent Technology

PACCAR TX-12 Transmission

Discover stress-free driving with the PACCAR TX-12 - the purpose-built automated transmission intuitively designed for maximum compatibility with the PACCAR Powertrain.  

  • The internal electrical system minimizes exposure and corrosion of wires and connectors, greatly reducing maintenance needs
  • The PACCAR TX-12 offers the best overall gear ratio coverage with superior low-speed maneuverability
  • The purpose-built automated transmission does more than fully integrate with the PACCAR MX Engines - its durable aluminum housing makes it the lightest 12-speed transmission in its class

The PACCAR TX-12 seamlessly integrates with the PACCAR MX Engines and PACCAR DX-40 Axle for superior performance and driver comfort.  The lightweight design and trusted dependability increase the return on your investment, no matter the distance.

View TX-12 Spec Sheet

View TX-12 Brochure

PACCAR TX-8 Transmission

Experience efficiency with the innovative design of the PACCAR TX-8 automatic transmission - maximizing performance, reliability and uptime.

  • Maximum gear spread combined with best gear harmonization for smoother shifts
  • Enables early 1st gear lock-up providing smoother shifts, faster acceleration, and improved fuel economy
  • Fewer moving parts, reduced friction, and no external parts

Quiet-running characteristics and the responsiveness of a fine passenger car along with a whole host of features that enhance safety is what you can expect from the PACCAR TX-8.

View TX-8 Spec Sheet

View TX-8 Brochure

Please contact your Rihm sales representative to learn more about these transmissions.