ARB Air Locker Differential

Jeep Grand Cherokee/Wrangler 91-06 5.2L/4.0L/2.5L

RD104

Overview:

The ARB Air Locker is the world’s premier traction aid designed to enhance off-road capability by providing instant, on-demand locking of the differential. Engineered specifically for Dana 30 axles with 30 spline shafts and gear ratios of 3.73 and up, this Air Locker is ideal for Jeep Wrangler models from 1987 to 2006 and Jeep Grand Cherokee models from 1993 to 2004. With a simple flick of a switch, the Air Locker engages, locking both axle shafts together to deliver maximum traction in challenging terrain, while maintaining smooth on-road drivability when disengaged.

Built for serious off-road enthusiasts and professionals alike, the ARB Air Locker allows drivers to tackle the toughest conditions confidently, from rocky trails to slippery mud and snow. Its pneumatic operation ensures quick, reliable engagement at any speed, giving you full control without compromising vehicle handling or driveline longevity.

Key Features:

The ARB Air Locker combines advanced engineering with rugged durability to deliver superior traction and reliability. Key features include:

• Instant, on-demand locking with pneumatic activation for precise control
• Compatible with Dana 30 axles featuring 30 spline shafts and gear ratios of 3.73 and higher
• Steel reinforced, elastomer bonded annular seal designed to withstand extreme temperatures and harsh environments
• Two-piece differential design with minimal moving parts for enhanced durability and reliability
• Patented timed locking mechanism enabling ultra-fast unlocking and high strength engagement
• Operates as a conventional open differential when unlocked, preserving normal drivability
• Includes activation switch, solenoid valve, air line, and bulkhead fitting for complete installation
• Requires an external air compressor (sold separately) for operation
• Reduces vehicle damage and environmental impact by enabling safer, controlled off-road driving

Construction & Design:

The ARB Air Locker is engineered with a robust two-piece design that ensures exceptional strength and longevity. The internal locking mechanism is pneumatically operated, allowing for smooth engagement and disengagement without the need for complex mechanical linkages. The steel reinforced, elastomer bonded annular seal provides superior resistance to extreme climatic conditions, preventing leaks and contamination. Minimal moving parts reduce wear and increase reliability, making the Air Locker a trusted choice for demanding off-road applications.

Installation & Fitment:

This Air Locker is designed as a direct replacement for Dana 30 differentials with 30 spline shafts and gear ratios of 3.73 and up. Installation requires removal of the existing differential and installation of the Air Locker unit, along with the included activation switch, solenoid valve, air line, and bulkhead fitting. While professional installation is recommended to ensure proper setup and air system integration, experienced enthusiasts can perform the upgrade with standard mechanical tools. Note that an air compressor is required for operation but is not included in the kit.

What's Included:

• ARB Air Locker differential unit
• Activation switch for driver control
• Solenoid valve for pneumatic operation
• Air line and bulkhead fitting for air supply connection

Ideal For:

The ARB Air Locker is perfect for Jeep Wrangler and Grand Cherokee owners who demand maximum traction and control in off-road conditions. Whether you are a weekend trail rider, overland adventurer, or professional working in challenging terrain, this differential upgrade delivers reliable performance and peace of mind. It is especially beneficial for those who frequently encounter slippery, uneven, or loose surfaces where conventional open differentials limit vehicle capability.

Fitment Details

• Jeep Wrangler (1987–2006) including Base, Islander, Laredo, Renegade, Rio Grande, Rubicon, Sahara, SE, Sport, Unlimited, and X models
• Jeep Grand Cherokee (1993–2004) including Base, Laredo, Limited, Orvis, Overland, SE, Special Edition, Sport, and TSi models

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.