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🧾 Overview
The ARB Air Locker Differential for the Dana 30 axle is the world’s premier selectable traction aid, engineered to deliver maximum traction on demand without compromising on-road drivability. With the simple flip of a switch, the Air Locker instantly locks the differential, ensuring both axle shafts rotate together for superior traction in mud, rocks, sand, snow, and uneven terrain.
At the core of the ARB Air Locker is a pneumatically operated internal locking system. When activated, the locker prevents the internal differential gears from rotating independently, tying both wheels directly to the ring gear for maximum possible traction. When disengaged, it functions as a conventional open differential—maintaining smooth handling, reduced tire wear, and normal driveline behavior on pavement.
Built for extreme environments, the Air Locker features a robust two-piece design with minimal moving parts, a patented timed locking mechanism for fast engagement and unlocking, and a steel-reinforced elastomer annular seal designed to withstand the harshest climates on Earth.
✔ 100% traction on demand
✔ Driver-controlled selectable locking
✔ Ultra-durable two-piece design
✔ Normal on-road behavior when unlocked
🛠 Installation
- Professional installation strongly recommended
- Requires differential setup and gear installation
- Air compressor required for operation (sold separately)
- Compatible with ARB onboard and portable air compressors
📌 Specs
- Key Features & Benefits
- Provides 100% traction on demand without affecting on-road drivability
- Selectable locking allows safer, slower, and more controlled off-road driving
- Pneumatically operated internal locking mechanism
- Two-piece forged steel design for superior strength
- Patented timed locking mechanism for fast engagement and unlocking
- Steel-reinforced elastomer bonded annular seal
- Minimal moving parts for maximum reliability
- Helps reduce vehicle damage and environmental impact
- 📐 Specifications
- Axle Type: Dana 30 (Front)
- Spline Count: 27 Spline
- Axle Shaft Diameter: 1.16 in
- Gear Ratio Compatibility: 3.73 & Up
- Material: Steel
- Finish: Silver
- Operation: Pneumatic (Air Actuated)
- Prop 65: No
- Sold As: Each
- 📦 What’s Included
- ARB Air Locker differential assembly
- Dash-mounted activation switch
- Air solenoid valve
- Air line and bulkhead fitting
- Installation components
- 🛡 Warranty
- 5-Year Manufacturer Warranty
- Warranty coverage provided by ARB
⚠️ Fitment Notes
- Front Axle Applications:
- Dana 30 (27-Spline) – 3.73 & Up
- Dana 30 7.2 in – 3.73 & Up / All (application dependent)
- M186 Front Axle – All Ratios
- Common Applications Include:
- Jeep vehicles equipped with Dana 30 front axles (verify ratio and spline count)
- ⚠️ Fitment Notes
- Air compressor required for operation (sold separately)
- Gear ratio and axle housing must be verified before ordering
- Some Dana 30 7.2 in applications vary by ratio—confirm compatibility prior to install
- Professional setup required to ensure proper operation and longevity