The 4000 Series™ is a heavy-duty fully automatic transmission system built for maximum productivity, engineered to meet the high-performance demands of heavy-duty vehicles in construction, energy, mining, defense and other severe-duty applications. Allison’s proven reliability and durability ensure efficient operation in challenging environments.
Key Specifications & Features
- Engine Compatibility: Works with engines rated 380–800 hp (283–597 kW) and torque up to 2,360 lb-ft (3,200 N·m)
- Gear Ratios: Optimized 6 or 7 forward speeds for balanced performance and fuel efficiency
- 6th Generation Controls: Advanced platform with enhanced technology, cybersecurity and functional safety
- FuelSense® 2.0: Delivers up to 6% fuel savings without compromising performance
- Fully Automatic Architecture: Uses torque converter instead of dry clutch, eliminating manual shifting and reducing downtime
- TerraTran™: Upgraded variant of the 4000 Series with increased horsepower, torque and GVW capacity for improved performance, climbing and handling in extreme conditions
Model Lineup
| Model | Forward Gears | Reverse Gears | Key Features |
|---|---|---|---|
| 4000 | 6 | 1 | — |
| 4500 | 6 | 1 | — |
| 4700 / 4800 / 4900 | 7 | 2 (deep + standard) | Ultra-low creep capability (forward + reverse) |
| 4970 (TerraTran) | 7 | 2 (fast + standard) | Fast reverse; higher rating than 4500 & 4700 Series |
Applications
The 4000 Series™ serves global industries including:
- Construction
- Fire & Rescue
- Mining & Specialty Vehicles
- Oil & Gas
- Pickup & Delivery
- Refuse & Public Service
- RV & Motorhome
- Bus & Coach
Support & Resources
- Digital Vocational Model Guide & TerraTran™ Brochure available for download
- Field testing comparisons vs. AMTs in gravel quarries
- Global network of authorized sales and service locations
- Proven to increase productivity, lower emissions, noise and total cost of ownership
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