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

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

dump truck against a blue sky and parked on rocky ground

The T880S is one of three Kenworth models that can now be equipped with the Paccar TX-12 Pro automated transmission. It is also available for the T680 and the W990.

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. It 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, one of the most efficient on-highway automated transmissions.

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“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.

The TX-12 Pro is optimally engineered to operate with all MX-11 and PX-9 engine ratings – up to 445 hp, 1,700 lb.-ft. of torque, MX-13 engine ratings up to 455 horsepower and 1,650 lb.-ft. of torque, and 70,000 pounds of gross combination vehicle weight (GCVW). 

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, and more. The 12-speed gear set provides wide ratio coverage, allowing for what Kenworth called excellent maneuverability around job sites.

truck transmission on blue background

Kenworth has expanded the availability of the Paccar TX-12 Pro Automated Transmission for Paccar MX-13 engines.

Photo: Kenworth/Work Truck

The TX-12 Pro offers dual PTO openings – a bottom mount 8-bolt and 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. 

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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.

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