The ARB Air Locker for Dana 30 axles is engineered with forged alloy components, a fully machined nodular iron case, and ARBs patented timed locking system. With the flip of a dash mounted switch, compressed air instantly engages the locking mechanism, tying both axle shafts directly to the ring gear for maximum traction in the toughest off-road conditions.When disengaged, it operates exactly like a factory open differentialquiet, predictable, and street friendly.

Includes:

• ARB Dana 30 Air Locker differential assembly
• Dash-mounted activation switch
• Solenoid valve
• Nylon air line
• Bulkhead fitting
• Note: Air compressor required for operation (sold separately).

Specifications

• Axle Model: Dana 30
• Spline Count: 27-spline
• Gear Ratio Compatibility: 3.73 & Up
• Differential Type: Selectable locking differential
• Case Material: Nodular iron
• Gear Material: Forged nickel alloy steel
• Operation: Pneumatic (air-actuated)
• Activation: Dash mounted switch
• Verify axle spline count prior to ordering

Fitment

Tech Insight

ARBs Air Locker stands apart through its patented clutch gear and timed locking system, which actively supports side gear teeth under load, which allows higher torque handling exactly when traction demand is greatest.

• Key engineering advantages include:
• Two-piece design with minimal moving parts for extreme durability
• Wave spring return system using multiple internal springs for fast, positive disengagement without external actuators
• Forged pinion and side gears with optimized tooth geometry offering up to 30% greater strength than comparable high-strength gears
• Steel-reinforced, elastomer-bonded annular seal proven through 20,000+ engagement cycles in extreme climates
• One-piece machined nodular iron case with double the standard number of pinion gears for superior torque distribution
• This design delivers consistent locking performance while maintaining long-term reliability in both competition and hardcore trail use.