Heavy Duty Trucking Logo
MenuMENU
SearchSEARCH

Kenworth Expands Paccar TX-12 Pro Transmission Availability for MX-13 Engines

The Paccar TX-12 Pro automated transmission is now available with the Paccar MX-13 engine for Kenworth’s T680, T880, and W990 models, designed to optimize performance for on- and off-highway applications.

Kenworth Expands Paccar TX-12 Pro Transmission Availability for MX-13 Engines

The TX-12 Pro automated transmission delivers enhanced performance for plows, dumps, tankers, and more.

Photo: Kenworth

2 min to read


The Paccar TX-12 Pro automated transmission is now available with the Paccar MX-13 engine for Kenworth’s T680, T880, and W990 models.

This transmission is designed to optimize performance for both on- and off-highway applications such as dumps, plows, tankers, and more. The TX-12 Pro builds upon the standard TX-12 on-highway automated transmission.

Ad Loading...

“The TX-12 Pro transmission’s integration with the MX-13 engine is a welcomed addition for our Class 8 customers that operate in vocational applications,” said Kevin Haygood, Kenworth’s assistant general manager for sales and marketing, in a news release.

The TX-12 Pro is optimally engineered to operate with:

  • MX-11 and PX-9 engine ratings up to 445 horsepower and 1,700 lb.-ft. of torque

  • MX-13 engine ratings up to 455 hp and 1,650 lb.-ft. of torque, and 70,000 pounds of gross combination vehicle weight (GCVW).

Ad Loading...

The Paccar TX-12 Pro features many of the TX-18 Pro enhanced capabilities for vocational and select off-highway applications, including:

  • Paccar’s Extreme Duty clutch for improved low-speed maneuvering

  • Rock Free mode to help trucks get unstuck in mud or sand

  • An off-highway calibration tuned for changing soil conditions

The 12-speed gear set provides wide ratio coverage, allowing for excellent maneuverability around job sites, according to Kenworth.

The transmission also offers dual PTO openings — a bottom-mount 8-bolt and a 4-bolt rear mount — for a combined 95 horsepower capacity.

The transmission is equipped with an internal oil temperature sensor. The sensor shows transmission temperatures on the in-cab 15-inch digital display and provides driver notifications in situations causing excessive temperatures.

Ad Loading...

As with all Paccar TX-12 and TX-18 transmission models, the TX-12 Pro is standard with Kenworth’s driver-friendly column-mounted, right-hand stalk shifter. The shifter places gear selection and engine brake controls at the driver’s fingertips for enhanced ergonomics, comfort, and overall performance.

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

More Equipment

Aurora and Volvo Dallas-Oklahoma City autonomous truck route.
Equipmentby News/Media ReleaseMay 5, 2026

Volvo Autonomous Solutions and Aurora Begin Dallas - Oklahoma City Route

Volvo Autonomous Solutions and Aurora expand their freight network with a new Dallas–Oklahoma City route, moving closer to scaled driverless operations.

Read More →
Gray Volvo tractor pulling trailer on open highway
Fuel Smartsby Deborah LockridgeMay 1, 2026

New High-Horsepower Natural Gas Engine Could Expand Fleet Options

Westport and Volvo are demonstrating a 500-hp truck with diesel-like efficiency — one that also offers what Westport says is a better pathway to using hydrogen fuel in trucks.

Read More →
Aurora Innovation self-driving truck.
Equipmentby News/Media ReleaseApril 30, 2026

Hirschbach Announces Plan to Deploy 500 Aurora Autonomous Trucks

Hirschbach and Aurora Innovation have inked a non-binding deal outlining a path to deploy 500 Aurora Driver-powered trucks into fleet operations.

Read More →
Ad Loading...
Bosch-Kodiak self-driving truck partnership.
Equipmentby News/Media ReleaseApril 30, 2026

Bosch, Kodiak AI Advance Toward Scaled Production of Autonomous Truck Hardware

New sensor integrations and component validation signal a shift from strategy to execution as Kodiak and Bosch push toward high-volume driverless truck deployment.

Read More →
Great American Trucks: REO
Equipmentby Jack RobertsApril 29, 2026

Great American Trucks: REO

The evolution of the modern truck was a long, slow affair. But perhaps no other company did more to establish the template for what a modern truck should be, and how it should perform, than REO.

Read More →
Western Star's Star Nation customer event.
Equipmentby News/Media ReleaseApril 27, 2026

Western Star Doubles Down on Driver Pride With 2026 Star Nation Experience

Western Star has expanded its operator-focused Star Nation competition and outreach to spotlight skill, attract new drivers, and strengthen industry ties.

Read More →
Ad Loading...
HDT Spotlight: Volvo VNR test drive.
Equipmentby Jack RobertsApril 23, 2026

Is the All-New VNR Volvo's Safest Truck Ever?

The all-new Volvo VNR is jam-packed with advanced safety features. Join HDT for a first-hand look at how Volvo is keeping drivers safer and productive on the road.

Read More →
2026 Volvo VNR
Equipmentby Jack RobertsApril 22, 2026

Volvo Redesigns the VNR With Drivers and Tight Turns in Mind

At Volvo’s New River Valley customer center, the all-new VNR proves that maneuverability, safety, and driver confidence can coexist in a regional-haul workhorse.

Read More →
Great Dane trailer.
Equipmentby News/Media ReleaseApril 21, 2026

FTR: Trailer Orders Jump in March, but Demand Still Lags

March trailer orders posted an unexpected monthly jump, but demand still trails historical norms as fleets prioritize power units over trailing equipment.

Read More →
Ad Loading...
Humble cabless autonomous freight hauler.
Equipmentby News/Media ReleaseApril 21, 2026

Autonomous Start-Up Humble Announces Cabless Autonomous Electric Hauler

A new autonomous truck startup company is targeting yard, port, and short-haul freight with a lighter, fully autonomous platform designed for dock-to-dock moves.

Read More →