ARB Airlocker Differential

1971–2006 Jeep Wagoneer, Dodge Charger, Dodge Ramcharger, Jeep Grand Wagoneer, Jeep Wrangler, Dodge Ram 1500, Dodge Ram 2500, Jeep Grand Cherokee

RD116

Overview:

The ARB Airlocker is the world’s premier traction aid designed to keep your vehicle moving confidently in all conditions. Engineered for off-road enthusiasts and professionals alike, this pneumatically operated locking differential provides instant, on-demand 100% traction at the flick of a switch. Compatible with a wide range of classic and modern 4x4 vehicles including Jeep Wagoneer, Dodge Charger, Ramcharger, Grand Cherokee, Wrangler, and Dodge Ram models, the Airlocker ensures you can tackle the toughest terrain with ease and control.

Unlike traditional limited-slip or locking differentials, the ARB Airlocker allows activation at any speed, giving you the flexibility to engage or disengage the lock without compromising drivability. When locked, it prevents the axle shafts from turning independently, maximizing traction by tying both wheels directly to the ring gear. When unlocked, it functions as a conventional open differential, preserving smooth on-road handling and driveline longevity.

Key Features:

Designed for reliability and ease of use, the ARB Airlocker offers a range of advanced features that enhance off-road performance:

• Instant pneumatic locking and unlocking at any vehicle speed for maximum traction control
• 100% traction on demand without affecting normal on-road drivability
• Patented timed locking mechanism for high strength and ultra-fast unlocking
• Steel reinforced, elastomer bonded annular seal engineered to withstand extreme temperatures
• Minimal moving parts for exceptional durability and reliability in harsh environments
• Easy activation via a simple dashboard-mounted switch, keeping driver focus on terrain
• Two-piece design for ultra-strong construction and simplified maintenance
• Compatible with Dana 44 axles featuring 30 spline shafts and gear ratios of 3.92 and up
• Maintains vehicle control and reduces environmental impact by enabling safer, slower off-road driving

Construction & Design:

The ARB Airlocker is engineered with robust materials and precision manufacturing to ensure long-lasting performance under the most demanding conditions. Its two-piece design minimizes moving components, reducing wear and increasing reliability. The steel reinforced, elastomer bonded annular seal is specifically designed to endure extreme climatic temperatures, protecting internal components from contamination and damage.

The internal pneumatic system operates smoothly and efficiently, allowing the driver to engage or disengage the locker instantly without mechanical delay. This design philosophy ensures the Airlocker can be activated at any speed, providing superior traction without compromising driveline integrity or vehicle handling.

Installation & Fitment:

The ARB Airlocker RD116 is a direct-fit replacement differential designed for Dana 44 axles with 30 spline shafts and gear ratios of 3.92 and higher. It fits a broad range of vehicles including Jeep Wagoneer (1971–1990), Dodge Charger (1974–1987), Dodge Ramcharger (1974–1993), Jeep Grand Wagoneer (1984–1991), Jeep Wrangler (1988–2006), Dodge Ram 1500 (1994–2004), Dodge Ram 2500 (1994–1998), and Jeep Grand Cherokee (1997–1998).

Installation requires professional mechanical skills and an air compressor system (sold separately) to operate the pneumatic locking mechanism. The kit includes all necessary components for integration with the vehicle’s existing axle and air supply system, ensuring a seamless upgrade to your drivetrain.

What's Included:

• ARB Airlocker differential assembly
• Activation switch for dashboard mounting
• Solenoid valve for pneumatic control
• Air line tubing
• Bulkhead fitting for secure air line installation

Ideal For:

This Airlocker differential is ideal for off-road enthusiasts, overlanders, and professionals who demand maximum traction and reliability from their 4x4 vehicles. Whether navigating rocky trails, muddy terrain, or steep inclines, the ARB Airlocker provides the confidence and control needed to conquer challenging environments while maintaining on-road drivability.

ARB is a globally recognized off-road and overlanding brand that builds hard-use equipment for trucks, SUVs, and adventure rigs. From bumpers, roof racks, and protection gear to its well-known Old Man Emu suspension systems, ARB focuses on durability, fitment, and real-world trail performance for drivers who push beyond pavement.