ARB Air Locker Locking Differential for AMC Model 20 (2.73 & Down) RD187 - Select Jeep/Hummer 1976-2006

Fits select 1976-2006 Jeep CJ5, CJ7, J10, Scrambler, Wagoneer, and AM General Hummer/H1 models equipped with the AMC Model 20 rear differential (2.73 and numerically lower gear ratios).

The ARB RD187 Air Locker provides 100% traction on demand, allowing you to bridge the gap between street drivability and extreme off-road capability. This pneumatically operated locking differential replaces your factory spider gears. When disengaged, it functions as a conventional open differential for predictable road manners. With the flip of a dash-mounted switch, the internal timed locking mechanism engages, tying both axle shafts together to provide maximum torque to both wheels regardless of surface conditions.

• Two-piece design provides maximum strength and reliability with minimal moving parts
• Steel-reinforced, elastomer-bonded annular seal engineered for extreme temperature ranges
• Patented timed locking mechanism for high strength and rapid unlocking
• Provides full traction without the accelerated tire wear of automatic lockers or spools
• Includes Air Locker differential, activation switch, solenoid valve, air line, and bulkhead fitting
• Requires an ARB air compressor for operation (sold separately)
• Manufacturer Part Number: RD187