Detroit DT12-OA Automated Manual Transmission
DT12OAGTP
The Detroit DT12-OA is a cutting-edge automated manual transmission (AMT) engineered for heavy-duty trucks. Known for its smooth operation, fuel efficiency, and high-performance capabilities, the DT12-OA is part of the Detroit Transmission lineup, a brand recognized for producing durable and reliable drivetrain components. Designed to handle the rigorous demands of modern commercial vehicles, the DT12-OA provides exceptional power delivery, efficient shifting, and long-lasting durability, making it a top choice for fleets that require both performance and low maintenance.
This transmission is ideal for long-haul trucking, construction, and other industries where truck performance, fuel economy, and driver comfort are crucial. Featuring the latest advancements in drivetrain technology, the DT12-OA offers enhanced reliability, reduced wear, and an optimized powertrain system that helps improve both operational efficiency and overall vehicle lifespan.
Key Features of the Detroit DT12-OA Transmission
- Automated Manual Transmission (AMT) System: Automatically shifts based on load, speed, and conditions; no clutch pedal needed.
- High Torque Capacity: Engineered for heavy-duty trucks hauling large loads over long distances.
- Fuel Efficiency: Advanced gear control system reduces consumption and operating costs.
- Advanced Control System: Intelligent monitoring of driving conditions to optimize engine and transmission performance.
- Enhanced Driver Comfort: Smooth gear shifts reduce fatigue and driveline wear.
- Durability and Longevity: Built with robust materials to endure demanding commercial use.
- Seamless Integration with Detroit Powertrain: Optimized for Detroit DD15® engines for complete system efficiency.
Benefits of the Detroit DT12-OA Transmission
- Enhanced fuel economy and reduced operating costs
- Increased driver comfort and reduced fatigue
- Optimized for high-torque, heavy-duty applications
- Lower maintenance with fewer wear-prone components
- Seamless powertrain integration for optimal reliability
Technical Specifications
- Transmission Type: Automated Manual Transmission (AMT)
- Number of Gears: 12 forward, 2 reverse
- Max GVW: Up to 80,000 lbs (36,287 kg)
- Torque Capacity: Up to 1,850 lb-ft (2,500 Nm)
- Gear Ratios: 1st – 16.24:1, 12th – 0.74:1, Reverse – 16.24:1
- Clutch Type: Automated clutch (no pedal)
- Weight: 380-420 lbs depending on configuration
- Shift Control: Fully automated with Economy, Performance, and Manual modes
- Lubrication: Synthetic fluid required
- Cooling: Integrated with heat exchanger
- Applications: Long-haul, regional, vocational
- Service Life: 500,000 miles (800,000 km) recommended fluid/filter interval






