ARB Air Locker Differential

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

RD175

Overview:

The ARB Air Locker is the world’s premier traction aid designed to provide maximum off-road capability and control. Engineered specifically for Dana 70 and Dana 80 axles with 37 spline shafts, this high-speed Air Locker is ideal for Dodge Ram 2500 (1994–2003) and Ram 3500 (1994–2002) models. With a simple switch activation, it instantly locks the differential, ensuring both wheels turn together for superior traction in challenging terrain. When disengaged, it functions as a conventional open differential, maintaining smooth on-road drivability.

Perfect for off-road enthusiasts, work trucks, and anyone requiring reliable traction in adverse conditions, the ARB Air Locker enhances vehicle capability without compromising daily driving comfort or driveline longevity.

Key Features:

Designed for durability and ease of use, the ARB Air Locker offers a range of advanced features that set it apart:

• Instant, on-demand locking with the flick of a switch for maximum traction
• High-speed activation allowing engagement at any vehicle speed without damage
• Pneumatically operated locking system that prevents axle shafts from turning independently
• Steel reinforced, elastomer bonded annular seal engineered to withstand extreme temperatures
• Two-piece ultra-durable design with minimal moving parts for exceptional reliability
• Patented timed locking mechanism providing high strength and ultra-fast unlocking
• Maintains normal open differential operation when unlocked for smooth on-road performance
• Compatible with Dana 70 and Dana 80 axles featuring 37 spline shafts and 1.60-inch diameter
• Includes activation switch, solenoid valve, air line, and bulkhead fitting for complete installation

Construction & Design:

The ARB Air Locker is engineered with rugged materials and precision craftsmanship to endure the harshest off-road environments. Its two-piece design minimizes moving components, reducing wear and increasing reliability. The steel reinforced, elastomer bonded annular seal ensures the differential remains sealed against dirt, water, and extreme temperature fluctuations. The high-speed carrier design allows the locker to engage safely at any speed, providing versatility for both trail and highway driving.

Installation & Fitment:

This Air Locker is a direct fit for 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 with 37 spline shafts. Installation requires an air compressor system (sold separately) to operate the pneumatic locking mechanism. The kit includes all necessary components for activation, allowing installation without extensive modifications. Professional installation is recommended to ensure proper setup and optimal performance.

What's Included:

• ARB Air Locker differential assembly
• Activation switch
• Solenoid valve
• Air line
• Bulkhead fitting

Ideal For:

The ARB Air Locker is ideal for off-road enthusiasts, heavy-duty truck owners, and professionals who demand reliable traction in mud, snow, rocks, and uneven terrain. It is especially suited for Dodge Ram 2500 and 3500 owners who require enhanced drivetrain performance without sacrificing on-road drivability. Whether tackling challenging trails or working in rugged environments, this Air Locker delivers confidence and control.

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.