ARB RD142 Air Locker Locking Differential

The ARB RD142 Air Locker is a pneumatically-activated locking differential designed to provide maximum traction in challenging off-road conditions. When engaged, the Air Locker forces both wheels on an axle to turn at the same speed, ensuring power is distributed equally regardless of available traction. This allows you to maintain forward momentum through mud, sand, snow, and rock obstacles where open differentials would leave you stranded.

Key Features:

• 100% engagement when activated—both wheels receive equal power
• Operates like a standard open differential when disengaged for normal on-road driving
• Driver-controlled activation via dash-mounted switch
• Proven ARB design trusted by off-road enthusiasts worldwide
• Complete kit includes replacement differential carrier, dash switch, air compressor line, solenoid valve, wiring harness, and bulkhead fittings

The Air Locker installs in place of your existing differential carrier and connects to an on-board air system. Unlike automatic lockers that engage based on wheel speed differential, the ARB Air Locker gives you complete control over when locking occurs, making it ideal for both daily driving and serious four-wheeling. The system is engineered for durability and can handle the demands of aggressive off-road use while remaining transparent during highway driving.