The world's premier traction aid, an ARB Air Locker keep you moving in all conditions. With the flick of the switch an Air Locker gives instant lock at any moment and its super strong design allows activation at any speed allowing you to tackle the toughest terrain. The advantage of the Air Locker lies in the pneumatically operated locking system inside the differential. When activated, the Air Locker prevents the internal differential gears from rotating and therefore prevents the axle shafts from turning independently of each other. With both wheels tied directly to the rotation of the ring gear, the vehicle maintains maximum possible traction at all times. When unlocked, it operates like a conventional open differential. An Air Locker equipped vehicle can be driven in a slower, safer and more controlled manner, greatly reducing the likelihood of vehicle damage and environmental impact.
Features
- Provides 100 percent traction on demand without affecting on-road drivability or driveline wear
- Easy, convenient operation allows the user to concentrate on the terrain without leaving the comfort and safety of the driver's seat
- Two-piece design is ultra-durable and extremely strong ? minimal moving parts ensure maximum reliability
- Patented ?timed' locking mechanism offers high strength and ultra-fast unlocking
- Steel reinforced, elastomer bonded annular seal designed to handle the most extreme climatic temperatures on Earth
- Kit includes: Air Locker differential, activation switch, solenoid valve, air line and bulkhead fitting
- Air compressor required for operation (sold separately)
Specifications
| Color |
Silver |
| Material |
Steel |
Documentation
The ARB Air Locker is a driver-controlled, selectable locking differential that provides ultimate traction on demand without sacrificing on-road driveability. When activated, it delivers equal drive to both wheels on an axle, allowing you to take full advantage of the available traction in all conditions.
A standard 'open' differential is a compromise, designed to allow wheels to turn at different speeds on pavement. off road, this becomes a liability, as it directs all power to the wheel with the least grip, leaving you stranded. While a limited-slip differential (LSD) offers a partial improvement, it requires wheelspin to engage and never truly locks. The ARB Air Locker overcomes this by solidly locking the axle at the flick of a switch, providing 100% traction instantly.
This allows you to confidently tackle steep inclines, rocky obstacles, and slippery tracks. When disengaged, the Air Locker functions just like an open differential, maintaining safe and predictable handling on sealed surfaces. This specific Air Locker (RD221) is designed for GM 8.5 inch 10 Bolt and AAM 860 axles, compatible with 28-spline shafts, and can be fitted to either the front or rear axle, providing versatile traction enhancement for your rig.
Product Details
-
Fitting Position: Front Axle, Rear Axle
-
Axle: Salisbury Axle
-
Axle Code: GM 8.5"
-
Number of Teeth on input shaft: 28
-
For shaft diameter: 30.5 mm
-
Gear Ratio: 2.73 &UP
-
Outer Diameter: 216.22 mm
-
Bore diameter: 127 mm
-
Number of Holes: 10
-
For bolt hole circle diameter from: 156 mm
-
Backlash: 0,15-9,25mm
-
Oil Viscosity Classification SAE: API GL-5
-
Net weight: 11.8 kg
⚠️ California Proposition 65: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
