The ARB Air Locker for Dana 30 (27‑Spline, 3.54 & Down) is the world’s premier selectable traction aid, engineered to deliver maximum grip and total control in any terrain. With the flick of a switch, the Air Locker instantly locks both axle shafts together, eliminating differential slip and ensuring both wheels receive equal torque for unbeatable traction.
Using a pneumatically actuated locking mechanism inside the differential, the Air Locker prevents internal gears from rotating independently. This means both wheels turn in unison with the ring gear, allowing your vehicle to maintain forward momentum even in deep mud, loose rock, or uneven terrain. When disengaged, it operates just like a standard open differential—providing smooth, predictable on‑road handling.
Built with ARB’s legendary strength and reliability, the Air Locker features a steel‑reinforced annular seal, minimal moving parts, and a patented timed locking mechanism for fast engagement and disengagement. Whether crawling technical trails or navigating harsh environments, the Air Locker allows slower, safer, and more controlled driving while reducing vehicle damage and environmental impact.
Why Drivers Choose the ARB Air Locker
- Instant, selectable 100% traction at any speed
- Pneumatic locking system delivers maximum durability and reliability
- Operates as an open differential when unlocked for normal street driving
- Allows safer, more controlled off‑road driving with reduced vehicle strain
- Patented timed locking mechanism ensures fast, secure engagement
- Minimal moving parts for long service life in extreme conditions
Additional Details
- Fitment: Dana 30 differential
- Spline Count: 27‑spline
- Gear Ratio Compatibility: 3.54 & down
- Operation: Pneumatic (air compressor required; sold separately)
- Includes: Air Locker differential, activation switch, solenoid valve, air line, bulkhead fitting
- Driving Style: Selectable locker for off‑road traction; open differential for on‑road use
Technical Resources
Product Specifications Sheet
Warranty
Installation Instructions
Key Features
- Easy, in‑cab activation for instant traction
- Steel‑reinforced, elastomer‑bonded annular seal withstands extreme climates
- Ultra‑durable two‑piece design with minimal moving parts
- Provides 100% traction on demand without affecting drivability
- Patented timed locking mechanism for fast unlocking
- Air compressor required for operation (sold separately)
