ARB Air Locker Locking Differential

The ARB Air Locker is an air-actuated locking differential (also called a selectable locker or diff locker) designed for serious off-road, overlanding, and 4x4 use. It lets you switch between a fully open differential for normal driving and a fully locked differential when you need maximum traction on loose, slippery, or uneven terrain.

Key Features:

• Driver-selectable operation: Engage the locker on demand with an on-board air supply. Release it to return to normal differential action.
• Full lock when needed: Both wheels on the axle are driven at the same speed to help maintain traction when one wheel loses grip.
• Open differential behavior when disengaged: Street manners, tire wear, and steering are close to stock when the locker is off.
• Pneumatic actuation: A compact air-operated mechanism with a sealed piston engages the lock. It is typically supplied with an air line and solenoid components for installation.
• Strong construction: It is built from high-strength materials and designed to work with the original differential gearing and carrier setup.
• Wide application range: It is offered in many models to suit different axle and differential designs, front or rear.

ARB is a respected Australian manufacturer of 4x4 equipment, and the Air Locker is one of its best-known products. It is a popular upgrade for rock crawling, trail driving, towing, and expedition travel. Installation should be done with correct differential setup procedures, and it is often paired with an ARB or other compatible on-board air compressor.