Single Rear Truck Axles
A Quiet Revolution
Equally fuel efficient and quiet as it is durable and reliable, this single rear truck axle system sets a new industry standard for longer gear life and reliable performance. The bottom-line business benefits of this truck axle are truly revolutionary.
Single Rear Axle Stats
Precision Performance
What makes our single rear truck axle such a high performer?
Less Weight, More Cargo
Up to 128lbs lighter than the competition, our single rear truck axles give you the bonus of fuel economy, without forsaking payload.
By using precision ground gears, and a larger differential, our rear axles run quieter, more consistently, and longer.
Our new axles require less general maintenance, which means more time on the road, and lower overall costs throughout the life of the axle.
Precision Ground Gears
Our gear sets are precision ground to deliver a smoother gear mesh, so you get a quieter ride and consistent operation compared to other manufacturers. This also allows for higher torque applications.
Big Innovations
What makes our single rear axles the most innovative and versatile on the market?
Larger Differential
Because we've eliminated the need for a pinion head bearing, we have more room to use a larger differential. And a larger differential translates into higher durability and overall stability of the axle.
Brake Service & Compatibility
We believe in building versatile parts. That's why our single rear truck axles are compatible with all brakes offered by Freightliner and Western Star Trucks. Our AAC rear axles offer air disc brakes without any wheel limitation.
Need parts or routine maintenance? Visit of one of our 800 dealers and distributors.
Trusted Reliability
Our axle design has been proven on the toughest roads all over the world. The global axle platform continues to be tested and improved for toughness and lower operational cost.
Service Maintenance
Our single rear axle needs less oil, while the pinion and carrier flange completely seal the axle from the dirt and grime on the road. This means easier maintenance, and a lower overall cost throughout the lifecycle of the axle.
Warranty
Our single rear axles are covered for 2 years and unlimited miles, and all warranties follow the owner. Check with your dealer for information.
Performance-Matched Axle Systems
Our axles work perfectly with the Detroit Diesel engines and transmission combinations. That improves fuel economy and overall performance.
Specifications
| Drive Axle |
Capacity lbs (kg) |
Weight lbs. (kg) |
Ring Gear Size (in/mm) |
Oil Capacity (qt./L) |
Maximum Torque (lb.-ft.) |
Available Ratios |
| ARS-13.0-2 |
13,000 (5,896) |
421 (191) |
12.8/325 |
7.4/7 |
8601 |
2.923
3.154
3.636
3.909
4.100
4.300
4.556
4.778
5.125
5.714
6.143
|
| ARS-15.0-2 |
15,000 (6.803) |
421 (191) |
| ARS-17.5-2 |
17,500 (7,937) |
440 (200) |
| ARS-19.0-2 |
19,000 (8,617) |
440 (200) |
| ARS-20.0-2 |
|
|
| ARS-21.0-2 |
21,000 (9,524) |
465 (211) |
| ARS-17.5-4 |
17,500 (7,937) |
555 (252) |
15.35/390 |
12.7/12 |
11001 |
2.846
3.077
3.308
3.583
3.909
4.100
4.300
4.556
4.778
5.222
5.875
6.143
6.857
|
| ARS-19.0-4 |
19,000 (8,617) |
555 (252) |
| ARS-20.0-4 |
20,000 (9,070) |
570 (259) |
| ARS-21.0-4 |
21,000 (9,524) |
570 (259) |
| ARS-23.0-4 |
23,000 (10,431) |
579 (263) |
Available with no spike differential and DCDL.
1 Dependent on application and selected ratio.
2 Requires specific application approval.
