ARB Air Locker Dana 44 35-Spline Locking Differential (3.73 & Down) - RD147 - Fits Select Jeep Wrangler 1997-2018

Fits select 1997-2018 Jeep Wrangler and Wrangler JK models equipped with Dana 44 rear axles and 35-spline axle shafts.

The ARB Air Locker (RD147) is the definitive selectable traction solution for off-road enthusiasts. This pneumatically operated locking differential allows you to switch from an open carrier to a 100% fully locked status with the flick of a dash-mounted switch. When locked, the RD147 prevents the internal differential gears from rotating, forcing both wheels to turn in unison with the ring gear for maximum traction. When disengaged, the unit behaves like a conventional open differential, preserving on-road drivability and reducing tire wear.

Built for extreme durability, this two-piece design features a patented timed locking mechanism for ultra-fast engagement and high strength. It is specifically engineered for Dana 44 housings using 3.73 and numerically lower gear ratios (e.g., 3.55, 3.21) and requires 35-spline aftermarket axle shafts.

• Manufacturer Part Number: RD147
• Axle Compatibility: Dana 44 (35-spline upgrade required)
• Gear Ratio: 3.73 and Down (Numerically lower)
• Forged steel gears for maximum torque resistance
• Steel-reinforced, elastomer-bonded annular seal for extreme temperature reliability
• Kit Includes: Air Locker differential, solenoid valve, activation switch, bulkhead fitting, and air line
• Requires onboard air compressor for operation (sold separately)