ARB RD187 Air Locker Differential with Pneumatic Locking System

The ARB RD187 Air Locker Differential delivers 100% traction on demand without compromising highway driving performance. This advanced locking differential features ARB's improved two-piece design with forged gears and is backed by an industry-leading five-year warranty.

How It Works:

The Air Locker uses a pneumatically operated locking system activated by a 12-volt ARB air compressor. When engaged via a simple switch from the driver's seat, the Air Locker prevents the differential gears from rotating, locking both axle shafts together. This ties both wheels directly to the ring gear rotation, ensuring maximum traction when you need it most. When deactivated, the unit functions as a conventional open differential for normal driving conditions.

Key Features:

• Improved two-piece construction with forged gears for enhanced durability
• On-demand activation and deactivation from the driver's seat
• Maintains factory highway driving characteristics when unlocked
• Pneumatic locking mechanism provides reliable, robust engagement
• Five-year warranty coverage
• Requires 12-volt ARB air compressor for operation (sold separately)

Benefits:

Beyond dramatically improving off-road capability, the Air Locker enables more controlled, deliberate vehicle operation in challenging terrain. This allows drivers to navigate obstacles at slower speeds with greater precision, reducing the risk of vehicle damage and minimizing environmental impact compared to momentum-based techniques.

Perfect for serious 4x4 enthusiasts who demand maximum traction for rock crawling, mud, sand, and steep inclines while retaining full on-road drivability.