PACCAR
Pac 78 18 Speed Transmission 009
Pac 78 18 Speed Transmission 009
Pac 78 18 Speed Transmission 009
Pac 78 18 Speed Transmission 009
Pac 78 18 Speed Transmission 009

Peterbilt offers new 18-speed automated transmissions

Feb. 24, 2022
PACCAR TX-18, TX-18 Pro designed to boost productivity, efficiency, uptime for Model 567, 389, and 579 trucks

Peterbilt Motors recently added the PACCAR TX-18 and TX-18 Pro automated transmissions to the family of PACCAR TX transmissions.

The all-new TX-18 is available in Peterbilt Models 567, 389, and 579 equipped with PACCAR MX engines, the company said.

The TX-18 was built from the ground up to provide productivity, efficiency, and uptime for a superior driver experience. The TX-18 is designed to work exclusively with the MX-11 and MX-13 engines. It is a workhorse for a variety of vocational applications, including heavy haul, dump truck, and cranes. The combination of the TX-18 transmission and MX engine provides up to 1,850 pound-feet of torque and is rated up to 140,000 pounds GCWR.

The TX-18 features a high-pressure diecast aluminum casing, one-piece serviceable input shaft, helical gearing, precision lubrication system, extreme duty clutch, and an integrated clutch housing, Peterbilt said.

The TX-18 can be configured with an optional transmission cooler to help keep it operating efficiently with demanding workloads. The transmission features four application-specific calibrations and comes standard with two PTO openings capable of a combined 160 hp.

The TX-18 has good low-speed maneuverability with small, even gear steps through all 18 forward speeds to deliver a smooth driving experience. A high-speed reverse with up to six configurable speeds is available in the TX-18 Pro to increase productivity in demanding applications. An automotive-style, stalk-mounted shifter with drive, neutral, reverse and manual modes ensure the operation of the TX-18 is simple and intuitive.

“The integration of the new TX-18 and TX-18 Pro with PACCAR’s line of MX engines further enhances Peterbilt’s ability to provide our customers the lowest cost of ownership, best-performing trucks in the industry,” said Jacob Montero, Peterbilt general sales manager. “The gains in productivity, efficiency, uptime, and the ease of use for drivers make these transmissions a must-have.”

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