The ARB Air Locker is a driver-selectable, air-operated locking differential that delivers 100% lock the instant you need it and open-diff manners the rest of the time. This unit is built for the Rockwell 2.5-ton (military) carrier with a 16-spline axle — so traction goes exactly where it is needed the moment a wheel lifts or a surface lets go.
Flip the switch and both wheels drive together for maximum grip climbing rocks, crossing ruts, or clawing out of mud and sand; switch it off and the axle behaves like a factory open differential for smooth, predictable on-road driving. It is the same proven Air Locker relied on by hard-core wheelers and expedition builds worldwide.
Specifications
| Specification | Detail |
|---|---|
| Type | Air-operated selectable locking differential |
| Differential / carrier | Rockwell 2.5-ton (military) |
| Spline count | 16 |
| Actuation | Compressed air source required |
| Brand | ARB |
| MPN | RD145 |
| GTIN | 881348007186 |
Good to know
- Requires a compressed-air source — pair with an ARB on-board air compressor (sold separately).
- Installs in place of your existing differential center; professional setup with correct ring-and-pinion backlash is recommended.
- Suits the Rockwell 2.5-ton military axle.
Proposition 65 Warning: This product can expose you to chemicals including those known to the State of California to cause cancer and/or reproductive harm. For more information go to www.P65Warnings.ca.gov.
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