Done spinning one wheel on the Dana 70X/80X? The ARB Air Locker RD176 turns your open or limited-slip differential into a fully locked axle the instant you flip the dash switch. Compressed air engages a 100% mechanical lock across the Dana 70X/80X 40-spline centre for maximum traction on demand, then releases for predictable, road-friendly manners the rest of the time.
Each Air Locker is built around a forged, heat-treated case with hardened internals, engineered to handle high-torque and big-tyre abuse without giving up everyday drivability. Unlike an automatic locker, engagement is 100% driver-controlled — you decide exactly when the axle locks. Note that an air source (an ARB compressor or other on-board air) is required to operate it.
Specifications
| Specification | Detail |
|---|---|
| Differential | Dana 70X/80X |
| Spline Count | 40 |
| Ratio Group | Low speed |
| Actuation | Air-operated (compressed air, ~100 psi) |
| Locker Type | Full 100% selectable locking differential |
| Air Source Required | Yes – ARB compressor or on-board air |
| Manufacturer Part No. (MPN) | RD176 |
| GTIN | 9332018028891 |
| Brand | ARB |
| Warranty | 5-year ARB Air Locker warranty |
Fitment: matched to the 40-spline, low-speed ratio group. Air Lockers are matched to the differential carrier, not the vehicle — confirm your diff, spline count and ring-gear ratio before ordering. Browse the full ARB range at Overland Kitted.
⚠ California Proposition 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer and/or reproductive harm. For more information go to www.p65warnings.ca.gov.
Presented by Overland Kitted
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