The Detroit DT12 Transmissions exemplify the pinnacle of automated manual drive systems. With versions tailored for both on-highway and vocational performance, smart shift logic, and seamless integration in Detroit’s powertrain suite, they offer exceptional efficiency, reliability, and ease of operation. Ready to upgrade your fleet’s driveline? Contact Tracey Road Equipment today to spec your next truck with the DT12.
Detroit Transmissions
PERFORMANCE. EFFICIENCY. DURABILITY. ALL IN ONE FAMILY OF TRANSMISSIONS.
Explore the Detroit Transmissions lineup, featuring the advanced DT12® Automated Manual Transmission (AMT)—designed for seamless integration within the Demand Detroit® ecosystem. Purpose-built for both on-highway and rugged vocational applications, Detroit Transmissions deliver precision, efficiency, and durability you can trust.
Choose your model
DT12 Vocational
| Max input Torque (lb-ft) | 2,250 |
| GCW Limits | 140,000 |
| Speeds | 12 Forward, 4 Reverse |
| Engine Compatibility | DD13, DD15, DD16 |
| Download Spec Sheet | |
DT12 On-Highway
| Max input Torque (lb-ft) | 2,250 |
| GCW Limits | 160,000 |
| Speeds | 12 Forward, 4 Reverse |
| Engine Compatibility | DD13, DD15, DD16 |
| Download Spec Sheet | |
Why Choose Detroit Transmissions?
Dual-Track Performance
Two specialized variants meet diverse needs:DT12 On-Highway Series – Optimized for long-haul efficiency and smooth shifting.
DT12 Vocational Series (DT12‑V and DT12‑VX) – Built for construction, refuse, and off-road duty with rugged components and enhanced torque capacity.
12-Speed Efficiency
A broad gear ratio range and refined programming enable efficient power delivery and fuel savings.Automated Convenience
Combines manual transmission reliability with automatic ease—only two pedals needed. Ideal for reducing driver fatigue and training time.Smart Integration & Fuel Strategies
Features like eCoast, skip-shift, Intelligent Powertrain Management (IPM), Active Driveline Protection, Hill Start Aid, and Creep Mode enhance efficiency, control, and vehicle protection.
Detroit DT12 – Quick Technical Overview
| Series | Purpose | Features |
|---|---|---|
| On‑Highway (DT12‑H, DT12‑HL, DT12‑HE) | Long-haul, fuel-conscious fleets | 12 speeds, 2,050 lb-ft torque, eCoast, skip-shift, IPM, PTO options |
| Vocational (DT12-V, DT12-VX) | Heavy-duty, tough conditions | Up to 2,500 lb-ft torque, robust gearing, bottom/rear PTO, Off-Road, Rock-Free, Power Launch, Paver and Hill-Start modes |
Automated Manual Transmissions like the DT12 provide manual transmission reliability with automatic convenience. They improve fuel economy, extend clutch life, and simplify training.
On‑Highway units emphasize efficiency and smooth highway performance. Vocational models are built for rough conditions, offering enhanced torque, durability, and specialized driving modes.
A feature that disengages the transmission during coasting, reducing engine drag and improving fuel economy.
Yes—vocational models include Off‑Road mode, Rock‑Free assist, Power Launch, Hill Start Aid, and Paver Mode for enhanced control and efficiency.
DT12 is fully synchronized with Detroit engines and axles via a Common Powertrain Controller, enabling smarter shift decisions and smoother performance overall.