THE DT12 VOCATIONAL SERIES

Rugged, reliable and ready to work.

Performance and durability under extreme conditions. That’s what the Detroit^® DT12^® Vocational Series transmissions bring to every job. Our three vocational models – the DT12-V, DT12-VL and DT12-VX – are now available in the Western Star 47X, Western Star 49X and Freightliner Plus-series trucks. No road, trail or work site is too extreme for these sturdy, reliable Detroit transmissions to handle.

New vocational features
Increased application coverage
Ease of operation for driver comfort

Brochures & Videos

DT12 V And DT12 VX Resize (1)

TRANSMISSION

DT12-V

DT12-VX

DT12-VL

MAX INPUT TORQUE (LB-FT)

2,250

2,500

1,650

OVERALL RATIO

14.56-0.78 (OD), 18.80-1.00 (DD)

12.79-0.78 (OD)

11.67-0.78 (OD), 14.93-1.00 (DD)

GCW LIMITS

140,000

275,000

80,000

PTO Availability

Rear and Bottom PTO

Rear PTO Only

SPEEDS

12 Forward, 4 Reverse

ENGINE COMPATIBILITY

DD13, DD15, DD16

DD13

TRUCK MODEL AVAILABILITY

WESTERN STAR 47X, WESTERN STAR 49X, Freightliner M2 112 Plus, Freightliner 114SD Plus

WESTERN STAR 49X, Freightliner M2 112 Plus, Freightliner 114SD Plus

WESTERN STAR 47X, Freightliner 114SD Plus

KEY FEATURE

Rugged and durable. Engineered to haul loads and take on job sites in tough conditions.

Tough gets tougher. Built for the extreme demands of oil fields, mining sites, logging trails and beyond.

BUILT TO MAXIMIZE WEIGHT SAVINGS FOR WEIGHT-SENSITIVE APPLICATIONS - UP TO 125 LBS LIGHTER THAN THE OTHER MODELS.

RAISING THE BAR ON DURABILITY: THE DETROIT DT12 VOCATIONAL SERIES

Purpose-built for the toughest jobs. The DT12-V and DT12-VX transmissions are engineered with large, robust gears and reinforced hardware to handle demanding vocational environments, from construction and logging to mining, farming and heavy haul.
Smarter control at low speeds. Vocational driving modes including Off-Road Mode, Rock Free and Power Launch give operators the control they need in soft soil, uneven terrain and tight jobsites. A new bottom PTO capability expands application coverage and upfit flexibility.
Enhanced reliability in extreme conditions. An improved oil system with new pump and optimized pickup reduces parasitic losses and maintains lubrication in rough conditions. Adaptive Thermal Management helps maintain ideal oil temperatures for better performance and durability across all duty cycles.
Flexibility to meet any vocational need. With multiple configurations and gearing options, the DT12 Vocational Series delivers the power, control, and durability contractors rely on every day.

NEW VOCATIONAL FEATURES: OPTIMIZED FOR EXTREME

Performance on demand.

Off-Road Mode features shift maps that give you peak performance on any terrain.
Rock-Free Mode helps you avoid wheel-stuck situations by using the accelerator to rock the vehicle free.
Paver Mode allows a dump truck to shift from neutral to drive without pressing the brake pedal while moving away, ensuring a steady flow to the paving machine.
Power Launch automatically increases engine speed for smooth, powerful take-offs with heavy loads – all while protecting the clutch and driveline.
Hill Start Aid (HSA) feature prevents rollback for up to 3 seconds when transitioning from a standstill to acceleration on a grade of 3% or more. The ABS module holds and modulates brake pressure after the driver has released their foot from the brake pedal, preventing the truck from rolling backwards for 3 seconds. This feature provides added safety and increases driver confidence.

A superior power launch option.

The Power Launch feature automatically increases engine speed to maximize torque, to ensure smooth launches with heady loads-all while protecting the clutch and driveline.

AMT: POWER MEETS SIMPLICITY

As automated manual transmissions (AMT), the DT12-V, DT12-VL and DT12-VX combine the benefits of manual and automatic designs. With computer-controlled shifting and clutch engagement, only two pedals are needed to operate the truck: the brake and accelerator. Even a less experienced driver can get to work with minimal effort, maximum productivity and all the power you need.

DT12 Vocational Series transmissions offer the ideal blend of technology and toughness. They’ve been tested for thousands of miles with precise engineering for jobsite environments, and provide 12 speeds for increased efficiency and flexibility. Also, seamless integration with Detroit engines and safety systems promotes optimal performance that you can’t get anywhere else. All told, these transmissions are equipped to meet any challenge you face.

Additional Service Offerings

Detroit Connect Virtual Technician

Detroit Connect Virtual Technician^® remote diagnostics system has your back. When it triggers a fault code, it tells you what it is, and how serious it is—as well as where, when and how to fix the issue.

More about Detroit Connect

Extensive Parts Availability

Trained technicians are ready to serve you at any of our 800+ authorized Detroit locations across the highways and backroads of North America.

Parts & Service

Truck Model Options

DT12 Vocational Series transmissions vary across a range of truck models.

Freightliner

FTL M2 112 Plus Available Truck Model Image — M2 112 Plus

Western Star

Find a Dealer