ARB Airlocker Differential

Fits Most Dodge/Jeep (91-17)

RD117

Overview:

The ARB Airlocker is the world’s premier traction aid designed to provide maximum off-road capability and control. This pneumatically operated locking differential allows drivers to instantly lock the axle shafts together at the flick of a switch, delivering 100% traction when you need it most. Ideal for off-road enthusiasts, overlanders, and professionals tackling challenging terrain, the Airlocker enhances vehicle stability and traction without compromising on-road drivability.

Compatible with a wide range of vehicles including Jeep Wagoneer, Dodge Charger, Ramcharger, Jeep Wrangler, and Dodge Ram models, this Airlocker is engineered for Dana 44 axles with 30 spline shafts and gear ratios of 3.73 and lower. Its robust design supports activation at any speed, allowing confident navigation through mud, rocks, snow, and other demanding conditions.

Key Features:

ARB’s Airlocker technology offers reliable and convenient traction control with the following standout features:

• Instant pneumatic locking system activated via a simple in-cabin switch
• Operates at any vehicle speed for seamless engagement on the move
• Steel reinforced, elastomer bonded annular seal designed for extreme temperature resistance
• Two-piece ultra-durable design with minimal moving parts for enhanced reliability
• Patented timed locking mechanism ensures high strength and rapid unlocking
• Provides 100% traction on demand without affecting driveline wear or on-road handling
• Compatible with Dana 44M axles featuring 30 spline shafts and gear ratios of 3.73 and below
• Easy installation with included activation switch, solenoid valve, air line, and bulkhead fitting
• Requires an external air compressor (sold separately) for operation

Construction & Design:

The ARB Airlocker is engineered with durability and performance in mind. Its two-piece construction minimizes moving parts, reducing potential failure points and ensuring long-lasting reliability even under the harshest off-road conditions. The steel reinforced, elastomer bonded annular seal is specifically designed to withstand extreme climatic temperatures, protecting internal components from contaminants and wear.

The internal locking mechanism uses pneumatic pressure to engage and disengage the differential gears, preventing the axle shafts from rotating independently and effectively locking both wheels together. This design maintains maximum traction without compromising the differential’s normal operation when unlocked, preserving drivability and reducing mechanical stress.

Installation & Fitment:

The ARB Airlocker RD117 is designed for direct fitment on Dana 44 axles with 30 spline shafts and gear ratios of 3.73 and lower. It fits a broad range of vehicles including Jeep Wagoneer (1971–1990), Dodge Charger (1974–1987), Dodge Ramcharger (1974–1993), Jeep Grand Wagoneer (1986–1991), Jeep Wrangler (1988–2017), Dodge Ram 1500 (1994–2004), Dodge Ram 2500 (1994–1998), and Jeep Wrangler JK (2018).

Installation requires an air compressor system (not included) to supply the pneumatic pressure needed for activation. The kit includes all necessary hardware such as the activation switch, solenoid valve, air line, and bulkhead fitting, allowing for a straightforward installation process by experienced technicians or skilled DIYers familiar with differential work.

What's Included:

• ARB Airlocker differential unit
• Activation switch for in-cabin control
• Solenoid valve for pneumatic operation
• Air line and bulkhead fitting for air supply connection

Ideal For:

This Airlocker is perfect for off-road enthusiasts, overlanders, and professionals who demand reliable traction in challenging environments. Whether navigating rocky trails, deep mud, snow, or uneven terrain, the ARB Airlocker provides enhanced control and confidence. It is especially suited for vehicles equipped with Dana 44 axles requiring a dependable locking differential that does not compromise everyday drivability.

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.