ARB Air Locker Differential

Fits Most Jeep (91-25)

Part #: RD100

Overview

The ARB Airlocker Differential is a premium pneumatic locking differential designed to deliver instant, 100% traction on demand. Engineered specifically for Dana 30 axles with 27 splines and gear ratios of 3.73 and higher, this differential significantly enhances off-road capability by ensuring both wheels turn together, maximizing grip in low-traction conditions. It is an ideal upgrade for Jeep owners who demand superior control and traction, especially for models including the Jeep Grand Cherokee (1993–2004) and Jeep Wrangler (1997–2026).

With the ability to engage the locker at any speed without causing driveline wear, the ARB Airlocker offers a reliable and durable solution for serious off-road enthusiasts. Whether tackling rocky trails, mud, sand, or steep inclines, this differential provides consistent performance and improved vehicle handling in challenging environments.

Key Features

The ARB Airlocker combines advanced engineering with robust construction to deliver exceptional off-road performance. Key features include:

• Instant pneumatic engagement for 100% traction on demand
• Compatible with Dana 30 axles featuring 27 splines and gear ratios of 3.73 and higher
• Designed for Jeep Grand Cherokee (1993–2004) and Jeep Wrangler (1997–2026) models
• Allows activation at any vehicle speed without driveline damage
• Ensures both wheels turn together for maximum grip in low-traction conditions
• Durable construction built to withstand harsh off-road environments
• Improves vehicle control and stability on uneven terrain
• Simple pneumatic actuation system for reliable operation

Construction & Design

The ARB Airlocker is engineered with precision and durability in mind. Its core design centers on a robust 27-spline Dana 30 differential housing optimized for gear ratios starting at 3.73. The internal locking mechanism is pneumatically actuated, allowing smooth and reliable engagement without the mechanical wear associated with traditional locking differentials.

Manufactured using high-strength materials and advanced machining techniques, the Airlocker is built to endure the rigors of off-road driving. Its sealed design protects internal components from dirt, water, and debris, ensuring long-lasting performance and minimal maintenance requirements.

Installation & Fitment

The ARB Airlocker is designed as a direct replacement for factory Dana 30 differentials on compatible Jeep models. Installation requires professional mechanical expertise and involves removing the existing differential carrier and installing the Airlocker unit along with the pneumatic actuator system. No major modifications to the axle housing are necessary, preserving the vehicle’s structural integrity.

This product fits the following vehicles:

• Jeep Grand Cherokee 1993–1998
• Jeep Grand Cherokee 1999–2004
• Jeep Wrangler 1997–2006
• Jeep Wrangler 2007–2018
• Jeep Wrangler 2018–2026

What's Included

• ARB Airlocker differential carrier assembly
• Pneumatic actuator and air line fittings
• Installation hardware and seals
• Detailed installation instructions

Ideal For

The ARB Airlocker is perfect for off-road enthusiasts, trail riders, and Jeep owners seeking enhanced traction and control in challenging environments. It is especially suited for those who frequently encounter mud, rocks, sand, or steep inclines where maximum wheel grip is essential. This differential upgrade also benefits drivers who want the flexibility to engage or disengage locking on demand without compromising driveline longevity.

ARB is a globally recognized off-road and overlanding brand that builds hard-use equipment for trucks, SUVs, and adventure rigs. From bumpers, roof racks, and protection gear to its well-known Old Man Emu suspension systems, ARB focuses on durability, fitment, and real-world trail performance for drivers who push beyond pavement.