Closer Look
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.
This ARB Air Locker, specifically engineered with a 12-bolt pattern and 30-spline axle shafts, is designed for the robust Toyota 8.4 inch Rear Axle. It is crucial to note that this locker suits open differentials and will not work with factory locker optioned 3rd members. While a standard 'open' differential directs power to the wheel with the least grip, 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. Built in Australia from high-strength, aerospace-grade materials, the ARB Air Locker is a durable and reliable traction aid, backed by a 5-year warranty, and trusted by off-roaders globally for its proven performance.
Fitting Position
Rear Axle
Axle
Banjo RA
Axle Code
Toyota 8.4'
Number of Teeth on input shaft
30
for shaft diameter [mm]
33
Gear Ratio
all
Specification (a)
Ring Gear
Outer Diameter [mm]
213
Bore diameter [mm]
127.5
Number of Holes
12
for bolt hole circle diameter from [mm]
152
Tightening Torque [Nm] (a)
96
Backlash
0.13-0.18mm
Specification (b)
Bearing Cap
Tightening Torque [Nm] (b)
85
Oil Viscosity Classification SAE
API GL-5
Warranty
5 Years
Net weight [kg]
9.5
Fitting Instructions
2102129_RD129.pdf
Differential_Installation_Record_215762A.pdf
Additional Info
Shipping Info & Returns
Warranty Policy
Environmental Impact
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