ARB Airlocker Dana 60 30 Spline Differential

1971–2003 Dodge B300 Van / B300 / Ram 2500 / Ram 3500 / B2500 / B3500

RD162

Overview:

The ARB Air Locker is the world’s premier traction aid, engineered to keep your vehicle moving confidently through the toughest terrain and challenging conditions. Designed for off-road enthusiasts and professionals alike, this pneumatically operated locking differential provides instant, on-demand 100% traction with the simple flick of a switch. Compatible with Dana 60 axles featuring 30 spline shafts and gear ratios of 4.56 and higher, the Air Locker is a reliable upgrade for a wide range of Dodge trucks and vans from 1971 to 2003.

By locking the differential gears, the Air Locker ensures both axle shafts rotate together, maximizing traction when you need it most. When disengaged, it functions as a conventional open differential, preserving smooth on-road drivability and minimizing driveline wear. This combination of performance and versatility makes the ARB Air Locker an essential component for serious off-roaders seeking enhanced control, safety, and vehicle longevity.

Key Features:

ARB’s Air Locker technology delivers superior traction and durability through innovative design and quality engineering. Key features include:

• Instant pneumatic locking system activated via a simple dashboard switch
• Compatible with Dana 60 rear axles, 30 spline shafts, and gear ratios 4.56 and up
• Steel reinforced, elastomer bonded annular seal designed for extreme temperature resistance
• Two-piece construction offering ultra-durability and strength with minimal moving parts
• Patented timed locking mechanism enabling high strength and ultra-fast unlocking
• Allows activation at any vehicle speed for maximum traction in all driving conditions
• Operates as an open differential when unlocked, maintaining on-road drivability
• Reduces vehicle damage and environmental impact by enabling safer, controlled off-road driving
• Includes activation switch, solenoid valve, air line, and bulkhead fitting for complete installation

Construction & Design:

The ARB Air Locker is engineered with a focus on strength, reliability, and longevity. Its two-piece design minimizes moving parts, reducing the risk of mechanical failure and ensuring consistent performance under extreme conditions. The steel reinforced, elastomer bonded annular seal withstands harsh climates, from freezing cold to scorching heat, protecting the internal components from contamination and wear.

Manufactured to precise tolerances, the Air Locker integrates seamlessly with Dana 60 axles, maintaining factory-level durability while enhancing traction capabilities. The pneumatically operated locking mechanism is robust and responsive, allowing drivers to engage or disengage the locker quickly without compromising driveline integrity.

Installation & Fitment:

Installation of the ARB Air Locker requires professional mechanical expertise and an air compressor system (sold separately) to operate the pneumatic locking mechanism. The kit is designed for direct fitment on Dana 60 rear axles with 30 spline shafts and gear ratios of 4.56 and above. It is compatible with a broad range of Dodge vehicles, including:

• Dodge B300 Van (1971–1974)
• Dodge B300 (1975–1980)
• Dodge Ram 2500 (1994–2003)
• Dodge Ram 3500 (1994–2003)
• Dodge B2500 (1995–1998)
• Dodge B3500 (1995–1998)

Proper installation ensures reliable operation and long service life. It is recommended to have the Air Locker installed by a qualified technician familiar with differential systems and pneumatic components.

What's Included:

• ARB Air Locker differential assembly
• Activation switch for dashboard mounting
• Solenoid valve for pneumatic control
• Air line tubing
• Bulkhead fitting for secure air line routing

Ideal For:

This ARB Air Locker is ideal for off-road enthusiasts, overlanders, and professionals who demand maximum traction and control from their Dodge trucks and vans. Whether navigating rocky trails, muddy paths, or steep inclines, the Air Locker provides the confidence and capability to tackle challenging terrain safely and efficiently. It is also well-suited for vehicles used in work environments where reliable traction is critical.

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.