The ARB Air Locker Differential for Ford 9" axles allow drivers to move slower, safer, and with greater control, significantly reducing drivetrain shock, vehicle damage, and environmental impact. Using a pneumatically operated locking system inside the differential that, when activated, locks the internal gears together, preventing independent axle shaft rotation and ensuring both wheels turn at the same speed. This provides maximum traction in extreme terrain while allowing precise driver control. When unlocked, it functions like a conventional open differential which is ideal for street use and high speed maneuverability.

Kit Includes:

• ARB Ford 9" Custom Air Locker Differential
• Dash activation switch
• Solenoid valve
• Air line
• Bulkhead fitting

Notes:

• Air compressor required for operation (sold separately).
• Custom axle shafts are required and must be matched to your specific housing, spline count, and application

Specifications

• Differential Type: Selectable Air Locker
• Axle Type: Ford 9" Custom
• Application: Performance / Custom axle builds
• Material: Steel
• Design: Two-piece carrier
• Activation: Pneumatic (air-operated)

Fitment

• Axle: Ford 9"
• Application Type: Performance / Custom Builds

Important Fitment Notes:

• Performance application models do NOT accept original equipment axle shafts
• Custom axle shafts are required and must be matched to your specific housing, spline count, and application
• Can be manually modified to accept some alternate axle spline configurations (builder-level modification)
• This Air Locker is intended for aftermarket housings, custom third members, and race/off-road builds, not factory Ford 9" assemblies.

Tech Insight

ARBs patented timed locking mechanism provides ultra-fast disengagement under load, minimizing driveline stress while maintaining exceptional strength. The steel-reinforced, elastomer-bonded annular seal is engineered to survive extreme temperatures and harsh environments, from desert heat to sub-zero climates.

The two-piece design reduces internal moving parts, increasing reliability under high horsepower, shock loads, and aggressive off-road usemaking this locker a top choice for race cars, rock crawlers, and hardcore trail rigs.