T14 Transmission Competitive Comparisons
Curious on how the International T14 Transmission compares to the competition?
The below chart provides an easy view of the features and differences. Download a PDF of full transmission comparisons here.
 SPECIFICATIONS/FEATURES |
 International® T14 |
 Detroit DT12 (OHE-OV) |
 Volvo iShift / Mack mDrive |
|---|---|---|---|
| # of Speeds/Gears | 14 | 12 | 12 |
| Reverse Speeds/Gears | 6 | 4 | 4 |
| Overall Ratio | 26.7 | 18.767 | 15.04 |
| Gear Ratio Range | 20.81 - 0.78 | 14.563 - 0.776 | 11.73 - 0.78 |
| Gear Steps | 29% | 29 - 38% | 26 - 30% |
| Torque (lb-ft)/HP | 1,850 | 1,850 | 2,600 |
| Case Material | Aluminum | Aluminum | Aluminum |
| Gear Train Design | Single Countershaft | Single Countershaft | Single Countershaft |
| Total Wet Weight w/Clutch (lbs) | 678 | 781.2 | 789 |
| Overall Length (mm) | 785 | 1199 | 891 |
| Shift Actuation | Pneumatic | Pneumatic | Pneumatic |
| Clutch Actuation | Electric | Pneumatic | Pneumatic |
| Clutch Type | 430 mm Single Plate Organic Pull | Single Plate Organic | Single Plate Organic |
| Oil Quantity in Quarts (Pints) | 9.6 (19.2) | 10.9 | 17.9 |
| Oil Cooler | Integrated Cooler, Standard | DHE OAC Opt <= 80k Required OAC | External |
| Oil Lubrication System | Variable Fluid Management System | Variable Fluid Management System | Standard Wet Sump |
| Oil Service Interval | 600K Miles | 600K Miles | 500K Miles |
| Transmission PTO Offerings | Rear PTO, Air (Single/Dual) | 2 PTO Provisions - Bottom 8-bolt & Rear | Rear PTO (single, double or triple) |
| SPECIFICATIONS/FEATURES |
iShift HD / Mack mDrive HD |
 Eaton Endurant HD |
 Eaton Endurant XD |
|---|---|---|---|
| # of Speeds/Gears | 13 or 14 | 12 DD | 18 |
| Reverse Speeds/Gears | 6 | 2 | 2 |
| Overall Ratio | 41.025 | 19.73 | 20.5 |
| Gear Ratio Range | 32 - 0.78 | 14.43 - 0.77 | 14.32 - 0.70 |
| Gear Steps | 26-50% | 31% | 20% |
| Torque (lb-ft)/HP | 2,300 | 1,850 / 510 | 2,050 |
| Case Material | Aluminum | Aluminum | Aluminum |
| Gear Train Design | Single Countershaft | Twin Countershaft | Twin Countershaft |
| Total Wet Weight w/Clutch (lbs) | 840.5 | 705 | 825 |
| Overall Length (mm) | 1,016 | 964 | 1048 |
| Shift Actuation | Pneumatic | Pneumatic | Pneumatic |
| Clutch Actuation | Pneumatic | Pneumatic | Pneumatic |
| Clutch Type | Single Plate Organic | 430 mm Single Plate Organic Push | 430 mm Single Plate Organic Push, High Temp |
| Oil Quantity in Quarts (Pints) | 17.9 | 8 | 12.7 (25.4) |
| Oil Cooler | External | No | Cooler Optional |
| Oil Lubrication System | Standard Wet Sump | Dry Sump | Dry Sump |
| Oil Service Interval | 500K Miles | 750K Miles | 750K Miles |
| Transmission PTO Offerings | Rear PTO (Single, Double or Triple) | 2 PTO Provisions - Bottom 8-bolt & Rear (optional) | 2 PTO Provisions - Bottom 8-bolt & Rear |
SPECIFICATIONS/FEATURES |
International® T14 |
 Allison 4500 |
 Allison 4700 |
|---|---|---|---|
| # of Speeds/Gears | 14 | 6 | 7 |
| Reverse Speeds/Gears | 6 | 1 | 2 |
| Overall Ratio | 26.7 | 41.09 | 69.79 |
| Gear Ratio Range | 20.81 - 0.78 | 27.63* - 0.76 | 44.67* - 0.64 |
| Gear Steps | 29% | 13 - 113% | 16 - 117% |
| Torque (lb-ft)/HP | 1,850 | 1,550 / 1,650 | 1,550 / 1,850 |
| Case Material | Aluminum | Aluminum | Aluminum |
| Gear Train Design | Single Countershaft | Planetaries | Planetaries |
| Total Wet Weight w/Clutch (lbs) | 678 | 920.76 | 1182.04 |
| Overall Length (mm) | 785 | 848.8 | 1,104.60 |
| Shift Actuation | Pneumatic | Hydraulic | Hydraulic |
| Clutch Actuation | Electric | - | - |
| Clutch Type | 430 mm Single Plate Organic Pull | Torque Converter | Torque Converter |
| Oil Quantity in Quarts (Pints) | 9.6 (19.2) | 51 | 54 |
| Oil Cooler | Integrated Cooler, Standard | Required | Required |
| Oil Lubrication System | Variable Fluid Management System | Yes | Yes |
| Oil Service Interval | 600K Miles | Varies by Application | Varies by Application |
| Transmission PTO Offerings | Rear PTO, Air (Single/Dual) | 2 PTO Provisions - 10-bolt at 1 & 8'oclock | 2 PTO Provisions - 10-bolt at 1 & 8'oclock |
*Using a multiplier of 2.42 for the torque converter (Allison**)