ARB Air Locker Differential

Jeep Grand Cherokee/Wrangler 91-09 5.2L/4.0L/3.8L/2.5L

RD103

Overview:

The ARB Air Locker is the world’s premier traction aid designed to provide maximum off-road capability and control. Engineered for serious enthusiasts and professionals alike, this pneumatically operated locking differential delivers instant, on-demand 100% traction at the flick of a switch. Whether navigating rocky trails, mud, sand, or snow, the Air Locker ensures both wheels turn in unison, dramatically improving vehicle stability and traction in the toughest conditions.

Ideal for Jeep owners seeking enhanced off-road performance without compromising on-road drivability, the ARB Air Locker allows you to maintain control and confidence in all environments. Its robust design supports activation at any speed, enabling seamless transitions between locked and unlocked modes without the need to stop or slow down.

Key Features:

Designed with reliability and ease of use in mind, the ARB Air Locker offers a range of advanced features that set it apart from conventional differentials:

• Instant pneumatic locking mechanism activated via a simple dashboard switch
• Provides 100% traction on demand by locking both axle shafts together
• Operates as a standard open differential when unlocked for normal driving
• Steel reinforced, elastomer bonded annular seal engineered for extreme temperature resistance
• Ultra-durable two-piece design with minimal moving parts for maximum reliability
• Patented timed locking system ensures high strength and rapid unlocking
• Compatible with Dana 35 axles featuring 27 spline shafts and gear ratios between 2.73 and 3.31
• Allows activation at any vehicle speed, enhancing safety and control on challenging terrain
• Reduces driveline wear and environmental impact by enabling slower, more controlled driving

Construction & Design:

The ARB Air Locker is built to withstand the harshest off-road conditions. Its two-piece construction combines high-strength steel components with precision engineering to ensure durability and long service life. The elastomer bonded annular seal is specifically designed to resist extreme climatic temperatures, preventing leaks and contamination. With minimal moving parts, the design reduces potential failure points, delivering consistent performance and reliability.

Inside the differential, the pneumatically operated locking mechanism securely prevents the internal gears from rotating independently, effectively tying both wheels to the ring gear’s rotation. This robust engineering allows the Air Locker to handle the increased torque demands of off-road driving without compromise.

Installation & Fitment:

The ARB Air Locker is a direct-fit replacement for Dana 35 differentials with 27 spline shafts and gear ratios from 2.73 to 3.31, making it an ideal upgrade for a wide range of Jeep models. Installation requires professional mechanical expertise and the use of an air compressor system (sold separately) to operate the pneumatic locking mechanism. The kit includes all necessary components for integration, but proper setup and calibration are essential to ensure optimal performance and reliability.

What's Included:

• ARB Air Locker differential assembly
• Activation switch for dashboard mounting
• Solenoid valve for pneumatic control
• Air line tubing
• Bulkhead fitting for firewall installation

Ideal For:

This ARB Air Locker is perfect for Jeep owners who demand superior traction and control in off-road environments. Whether you are tackling rocky trails, mud, snow, or sand, this differential upgrade enhances your vehicle’s capability and confidence. It is especially suited for owners of Jeep Grand Wagoneer (1985–1989), Jeep Wagoneer (1985–1989), Jeep Wrangler (1987–2009), and Jeep Grand Cherokee (1993–2004) looking to improve their vehicle’s performance without sacrificing 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.