Our precision-built transmissions are engineered from the ground up for intuitive operation and superior performance. Their intelligent features use look-ahead technology to execute shift decisions that improve fuel economy and driver comfort.
TX-18
The new PACCAR TX-18 transmission delivers productivity, efficiency, and uptime to conquer tough jobs.
High Performance Meets Rugged Durability and Efficiency
Select each spot to learn more.
Advanced engineering
The PACCAR TX-18 combines performance and rugged durability needed to get tough jobs done. Optimized for integration with MX Engines and ideal for on-highway high performance and light vocational applications. PACCAR also offers the TX-18 Pro which allows for on- and off-highway high performance, severe service, and heavy vocational needs.
| Feature | Definition | |||
|---|---|---|---|---|
| Gears |
18 Forward/1-6 Reverse |
|||
| Max. Horsepower | 510 HP | |||
| Torque Capacity | 1,850 lb.-ft. | |||
| Maximum Operating Weight | 140,000 lbs. | |||
| Oil Capacity | 25.4 PINTS¹ | |||
| System Weight (transmission, clutch, and oil) | 808 LBS (TX-18) 813 LBS (TX-18 PRO) |
|||
| PTO Max Capacity | 8-BOLT, BOTTOM MOUNT; 4-BOLT REAR MOUNT – COMBINED 160 HP | |||
| Fluid Pressure Sensor | PROTECTION FROM GEAR BURNUP | |||
| Maintenance Intervals | ON-HIGHWAY: 500,000 MI/5 YRS VOCATIONAL: 250,000 MI/3 YRS CLUTCH: MAINTENANCE FREE |
¹ For coolerless, non-PTO configuration
² TX-18 Pro Only
Note: Some features and specifications not available with all configurations.
| Warranty | Definition |
|---|---|
| Linehaul | 5 YRS/750,000 MILES |
| Standard (Construction, Pickup & Delivery) | 3 YRS/300,000 MILES |
| Severe Duty (Pro only) | 2 YRS/UNLIMITED MILES |
| Ratios | |
|---|---|
| 1st | 14.32 |
| 2nd | 11.96 |
| 3rd | 10.02 |
| 4th | 8.43 |
| 5th | 7.04 |
| 6th | 5.9 |
| 7th | 4.95 |
| 8th | 4.13 |
| 9th | 3.46 |
| 10th | 2.89 |
| 11th | 2.41 |
| 12th | 2.02 |
| 13th | 1.7 |
| 14th | 1.42 |
| 15th | 1.19 |
| 16th | 1 |
| 17th | 0.83 |
| 18th | 0.7 |
| R1 | 15.25 |
| R2 | 12.73 |
| R3 | 10.67 |
| R4² | 3.08 |
| R5² | 2.57 |
| R6² | 2.15 |
| OVERALL | 20.46 |
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