ThisARB Selectable Air Locker for Dana 60HD allows compressed air to engage the locking mechanism, instantly synchronizing both axle shafts to eliminate wheel spin and deliver maximum forward momentum.

When disengaged, it behaves like an open differential, preserving street drivability, steering feel, and tire life. The Air Locker remains the gold standard in traction controlfrom weekend trails to the brutal demands of Ultra4s King of the Hammers.

Includes:

• ARB Dana 60/60 HD Air Locker differential assembly
• Activation switch
• Solenoid valve
• Bulkhead fitting
• Nylon air line
• Installation hardware
• Compressor required for operation (sold separately).

Specifications

• Axle: Dana 60 / Dana 60HD (Full Float Compatible)
• Position: Front or Rear
• Spline Count: 35-spline
• Axle Shaft Diameter: 1.50"
• Gear Ratio: 4.10 & Down
• Material: High strength steel
• Color: Silver

Fitment

Additional Notes:

• Reverse rotation front Dana 60 with aftermarket gears: may require RD166 or RD167
• Must verify spline count and shaft diameter prior to ordering
• This locker is for 4.10 & down gear ratios.

Tech Insight

The ARB Air Locker uses a pneumatically activated locking mechanism that eliminates differential gear movement when engaged. This design allows both wheels to turn together for full traction but returns to open diff behavior instantly when disengaged.

Key Engineering Advantages:

• Bonded Annular Seal
• Steel reinforced, elastomer bonded
• Proven for 20,000+ cycles in extreme temperature conditions
• Strengthened Pinion Gear Design
• Forged nickel alloy steel
• Redesigned gear-tooth geometry increases strength by up to 30%
• Cross Shaft Retaining System
• One-piece hardened retaining pins
• Tapered thread junction prevents loosening under load
• Competition Proven Air Lockers dominate top-tier off-road events like Ultra4 King of the Hammers, where racers rely on their unmatched durability and performance.