The ARB RD245 Air Locker Differential is designed for Jeep JL Sport & Sahara models equipped with M220 axles, and allows instant activation at any speed, giving you maximum control when terrain conditions demand it.

Unlike automatic lockers, the ARB Air Locker operates pneumatically. When engaged, it fully locks the differential, preventing internal gears from rotating independently and forcing both axle shafts to turn together. This ensures maximum traction across rocks, mud, sand, and steep climbs. When switched off, it reverts to a conventional open differential for smooth, predictable on-road driving.

Kit Includes:

• ARB Dana M220 Air Locker Differential
• Dash activation switch
• Solenoid valve
• Air line
• Bulkhead fitting

Note: Air compressor required for operation (sold separately).

Specifications

• Brand: ARB
• Part Number: RD245
• Differential Type: Selectable Air Locker
• Material: Steel
• Color: Silver
• Spline Count: 32
• Shaft Diameter: 1.41 in
• Gear Ratio Compatibility: All ratios
• Activation: Pneumatic (air-operated)

Fitment

Vehicle Compatibility Notes:

• Compatible with Jeep JL Sport & Sahara models equipped with M220 (rear) or M210 (front)
• Not compatible with JL Rubicon
• OE locker replacement requires aftermarket axle shafts or shafts from a non-OE-locker-equipped vehicle

Tech Insight

ARBs patented timed locking mechanism delivers ultra-fast disengagement under load, reducing driveline stress while maintaining strength. The two-piece carrier design minimizes internal moving parts, increasing reliability under extreme torque and shock loads. A steel-reinforced, elastomer-bonded annular seal ensures consistent performance across extreme temperaturesfrom desert heat to arctic cold.

Selectable control means traction only when you need itno compromise on-road, maximum confidence off-road.