ARB Air Locker Differential with Pneumatic Locking System

The ARB Air Locker is a selectable, pneumatically actuated locking differential (also called a diff locker or air locking differential). It gives you open-differential manners on the road and a fully locked axle when you need it off-road. Air Lockers are built for 4x4, overland and off-road vehicles that face loose, uneven or low-traction terrain.

Key Features:

• Selectable operation: The differential runs as a standard open unit until you engage it. This keeps normal driving and tire wear predictable.
• Pneumatic actuation: Air pressure from an on-board compressor engages the locking mechanism. Locking and unlocking is done from the cab with a switch.
• 100% lock when engaged: Both axle shafts are driven together, so power goes to the wheel with traction.
• Robust construction: The heavy-duty internal components are made to hold up to hard off-road use.
• Sealed air delivery: A seal housing and air line feed the locker. This keeps the system reliable in dirt, water and mud.
• Wide application range: The product line covers many axle designs and models. Each model has its own part number.

ARB is an Australian maker of 4x4 equipment, and its Air Locker is among the best-known aftermarket lockers. It improves traction, climbing ability and control in sand, mud, rock and snow. Installation needs correct differential setup, and ARB's instructions should be followed for the specific model. An air compressor is needed to operate the locker.