ARB Airlocker Dana 30 27 Spline 3.73 and Up: Jeep Wagoneer (71-83) / Scrambler (81-85) / Wrangler (87-23) / Grand Cherokee (93-04) / Wrangler JK (18)

ARB Airlocker Dana 30 27 Spline Differential

1971–2023 Jeep Wagoneer, Scrambler, Wrangler, Grand Cherokee, Wrangler JK

RD100

Overview:

The ARB Airlocker Dana 30 27 Spline differential is the ultimate traction aid designed to keep your Jeep moving confidently across the toughest terrains. Engineered for a wide range of Jeep models including Wagoneer, Scrambler, Wrangler, Grand Cherokee, and Wrangler JK from 1971 through 2023, this air-operated locking differential delivers instant, on-demand 100% traction. With the simple flick of a switch, the Air Locker locks the axle shafts together, ensuring both wheels turn in unison for maximum grip in challenging off-road conditions.

Ideal for off-road enthusiasts and serious trail riders, the ARB Airlocker enhances vehicle control and safety by allowing activation at any speed without damaging the drivetrain. When disengaged, it functions as a conventional open differential, preserving smooth on-road drivability and minimizing wear.

Key Features:

Designed with durability and reliability in mind, the ARB Airlocker offers advanced technology and robust construction to meet the demands of extreme off-road use:

• Pneumatically operated locking system for instant and reliable traction control
• Compatible with Dana 30 axles featuring 27 splines and gear ratios of 3.73 and up
• Activation possible at any vehicle speed, allowing safe and controlled driving
• Steel reinforced, elastomer bonded annular seal engineered for extreme temperature resistance
• Minimal moving parts design ensures maximum reliability and long service life
• Patented timed locking mechanism enables ultra-fast unlocking and high strength
• Maintains normal open differential operation when unlocked for everyday driving
• Includes all necessary components for installation: activation switch, solenoid valve, air line, and bulkhead fitting
• Requires an external air compressor (sold separately) for operation

Construction & Design:

The ARB Airlocker is engineered with a two-piece design that balances strength and durability while minimizing complexity. Its internal locking mechanism is pneumatically actuated, preventing the internal differential gears from rotating independently and effectively locking both axle shafts together. The steel reinforced annular seal is bonded with elastomer to withstand the harshest environmental conditions, from extreme heat to freezing cold, ensuring reliable performance in all climates.

ARB’s commitment to quality is evident in the robust materials and precision engineering used throughout the Airlocker, making it a trusted choice for serious off-roaders who demand dependable traction without compromising driveline longevity.

Installation & Fitment:

The ARB Airlocker Dana 30 27 Spline is designed for direct fitment on a broad range of Jeep models equipped with Dana 30 axles and 27 spline shafts, supporting gear ratios of 3.73 and higher. Compatible vehicles include Jeep Wagoneer (1971–1983), Jeep Scrambler (1981–1985), Jeep Wrangler (1987–2023), Jeep Grand Cherokee (1993–2004), and Jeep Wrangler JK (2018).

Installation requires moderate mechanical skill and the use of an air compressor system (not included) to operate the pneumatic locking mechanism. The kit provides all necessary hardware and components for integration, allowing you to retain full control from the driver’s seat without manual intervention at the axle.

What's Included:

• ARB Air Locker differential assembly
• Activation switch for in-cabin control
• Solenoid valve to regulate air flow
• Air line tubing
• Bulkhead fitting for secure air line routing

Ideal For:

This Airlocker is perfect for Jeep owners who frequently encounter challenging off-road conditions such as mud, rocks, sand, and steep inclines. It is especially suited for trail enthusiasts, rock crawlers, and overlanders seeking enhanced traction without sacrificing on-road drivability. The ability to engage and disengage the locker at any speed provides added safety and vehicle control, reducing the risk of drivetrain damage and environmental impact.