ARB Airlocker Differential

1994–2003 Dodge Ram 2500 / 1994–2002 Dodge Ram 3500

RD174

Overview:

The ARB Airlocker is the world’s premier traction aid designed to provide maximum traction in all driving conditions. Engineered for demanding off-road enthusiasts and professionals, this pneumatically operated locking differential delivers instant, on-demand locking at the flick of a switch. Compatible with Dana 70 and Dana 80 axles featuring 37 spline shafts, the Airlocker enhances vehicle capability by locking both axle shafts together, ensuring both wheels turn simultaneously for superior traction on the toughest terrain.

Ideal for Dodge Ram 2500 and 3500 models from the mid-1990s to early 2000s, the Airlocker allows drivers to maintain control and momentum in challenging environments without sacrificing on-road drivability. Its robust design supports activation at any speed, enabling safer, more controlled off-road driving while minimizing vehicle damage and environmental impact.

Key Features:

The ARB Airlocker combines innovative technology with durable construction to deliver reliable performance and ease of use:

• Instant pneumatic locking system activated via a simple dashboard switch
• Operates at any vehicle speed for versatile on- and off-road use
• Steel reinforced, elastomer bonded annular seal designed for extreme temperature resistance
• Two-piece design with minimal moving parts for maximum reliability and durability
• Patented timed locking mechanism ensures ultra-fast unlocking and high strength
• Provides 100% traction on demand without affecting driveline wear or on-road handling
• Compatible with Dana 70 and Dana 80 axles featuring 37 spline shafts and 1.60-inch shaft diameter
• Includes activation switch, solenoid valve, air line, and bulkhead fitting for complete installation
• Requires an external air compressor (sold separately) for operation

Construction & Design:

The ARB Airlocker is engineered with a focus on strength and reliability. Its two-piece design minimizes moving components, reducing potential failure points and ensuring long-term durability under extreme conditions. The steel reinforced, elastomer bonded annular seal is specifically designed to withstand the harshest climates, from freezing cold to scorching heat, maintaining airtight performance and protecting internal components.

Built to integrate seamlessly with Dana 70 and Dana 80 axles, the Airlocker’s internal locking mechanism prevents differential gears from rotating independently when engaged, effectively tying both wheels directly to the ring gear. This design maximizes traction while maintaining smooth operation when unlocked, allowing the differential to function like a conventional open unit during normal driving.

Installation & Fitment:

The ARB Airlocker is designed for direct fitment on Dodge Ram 2500 models from 1994 through 2003 and Dodge Ram 3500 models from 1994 through 2002 equipped with Dana 70 or Dana 80 axles and 37 spline shafts. Installation requires removal of the existing differential carrier and replacement with the Airlocker unit. The kit includes all necessary components for activation, including the switch, solenoid valve, air line, and bulkhead fitting, but an air compressor is required and sold separately.

Professional installation is recommended to ensure proper setup and integration with the vehicle’s air supply system. Once installed, the Airlocker allows the driver to engage or disengage the locking mechanism from the cab, providing convenient control over traction without leaving the driver’s seat.

What's Included:

• ARB Airlocker differential carrier
• Activation switch for dashboard mounting
• Solenoid valve for pneumatic control
• Air line tubing
• Bulkhead fitting for axle housing

Ideal For:

This ARB Airlocker is ideal for off-road enthusiasts, overlanders, and professionals who require dependable traction in challenging terrain. It is perfectly suited for Dodge Ram 2500 and 3500 owners who demand enhanced capability without compromising daily drivability. Whether navigating rocky trails, mud, snow, or uneven surfaces, the Airlocker provides confidence and control to tackle the toughest conditions safely and efficiently.

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.