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ARB RD148 Front Air Locker for Hummer H3 2006-2021

Brand: ARB
Part Number: RD148
Product Type: Air Locker
Vehicle Fitment: Hummer H3 2006-2021
Condition: New
Shipping: Free Shipping!
Was: $1,447.50
Sale: $1,158.00
Save: 20%
Save: $289.50

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ARB air lockers enhance the traction of your 4×4 in just about any terrain, whether it's rock, clay, gravel, sand, snow or mud. Now with a state-of-the-art two-piece design available right across the range, forged gears for the ultimate in strength and durability. Onboard air compressor required to activate air lockers.


  • Easy maintenance
  • Air activated selectable locker
  • Simple push button operation
  • Thoroughly tested and proven
  • Converts from open differential to fully locked or spool
  • Vastly improved traction means less reliance on momentum reducing the likelihood of vehicle damage
  • Easy convenient operation without leaving the comfort and safety of the drivers seat
  • Ultra durable and extremely strong only the highest quality materials used in construction
  • Patented gear technology and 2-piece design ensures optimal locking strength


  • Drivetrain: 4x4
  • Position: Front
  • Ratio Supported: All
  • Material: Nodular Iron
  • Number of Axle Spline Teeth: 28
  • Number of Ring Gear Bolts: 10
  • Ring Gear Torque: 120 Nm
  • Ring Cap Torque: 63/75 Nm
  • Ring Gear Inner Diameter: 4.63"
  • Ring Gear Outer Diameter: 7.6"
  • Backlash: 0.15-0.25 mm
  • Diameter of Driveshaft: 1.20"
  • Voltage: 12 V

Vehicle Fitment 


Technical Files 

Installation Instructions




Shipping Information

  • Item Requires Shipping
  • 1.0 lbs.
  • W1.0000” x H1.0000” x L1.0000”
  • Free Shipping!
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