ARB Airlocker Differential

1994–2002 Dodge Ram 2500 / Dodge Ram 3500

RD165

Overview:

The ARB Airlocker is the world’s premier traction aid designed to keep your vehicle moving confidently through the toughest terrain. Specifically engineered for the Dana 60 axle with 32 splines, this air-operated locking differential provides instant, on-demand 100% traction at the flick of a switch. Ideal for off-road enthusiasts and professionals who demand maximum control and reliability, the Airlocker allows you to tackle challenging conditions without compromising on-road drivability.

With the ability to engage at any speed, the ARB Airlocker ensures both wheels turn in unison, preventing wheel slip and maintaining traction where it matters most. When disengaged, it functions as a conventional open differential, preserving smooth handling and driveline longevity during normal driving.

Key Features:

Designed for durability and ease of use, the ARB Airlocker offers advanced technology that enhances vehicle capability and driver confidence:

• Instant pneumatic locking system for 100% traction on demand
• Operates at any speed, allowing safe activation on the move
• Steel reinforced, elastomer bonded annular seal for extreme temperature resistance
• Two-piece ultra-durable design with minimal moving parts for maximum reliability
• Patented timed locking mechanism ensures high strength and rapid unlocking
• Easy activation via a simple dashboard switch, keeping driver focus on terrain
• Maintains normal open differential function when unlocked for on-road drivability
• Compatible with Dana 60 axles featuring 32 splines and gear ratios of 4.10 and lower
• Requires an air compressor for operation (sold separately)

Construction & Design:

The ARB Airlocker is engineered with premium materials and precision manufacturing to withstand the rigors of off-road use. Its two-piece design minimizes moving components, reducing wear and increasing reliability under extreme conditions. The steel reinforced, elastomer bonded annular seal is specifically designed to endure the harshest climates, ensuring long-lasting performance and protection against contaminants.

Inside the differential, the pneumatically operated locking mechanism securely ties both axle shafts to the ring gear, eliminating wheel slip and maximizing traction. This robust construction allows the Airlocker to deliver dependable performance without compromising the integrity of your drivetrain.

Installation & Fitment:

The ARB Airlocker RD165 is a direct fit for 1994 to 2002 Dodge Ram 2500 and Ram 3500 models equipped with Dana 60 axles featuring 32 splines and gear ratios of 4.10 or lower. Installation requires replacing the factory differential with the Airlocker unit and connecting the included air line and solenoid valve to an air compressor system (not included).

Installation should be performed by a qualified technician to ensure proper setup and reliable operation. Once installed, the Airlocker integrates seamlessly with your vehicle’s drivetrain, providing on-demand traction without affecting normal driving characteristics.

What's Included:

• ARB Airlocker differential assembly
• Activation switch for dashboard mounting
• Solenoid valve for pneumatic control
• Air line tubing and bulkhead fitting

Ideal For:

The ARB Airlocker is perfect for off-road enthusiasts, overlanders, and professionals who require superior traction in challenging environments. Whether navigating rocky trails, muddy paths, or steep inclines, this differential enhances vehicle capability and driver confidence. It is especially suited for Dodge Ram 2500 and 3500 owners seeking a reliable, high-performance locking differential that maintains excellent on-road manners.

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.