ARB Air Locker

2018–2026 Jeep Wrangler JL & Gladiator JT M220 Axle

Part #: RD245

Overview

The ARB 32 Spline Rear Air Locker is a premium traction aid designed specifically for the rear axle of Jeep Wrangler JL and Gladiator JT models equipped with the M220 axle from 2018 through 2026. This advanced locking differential enhances off-road capability by providing instant, reliable traction when you need it most. With the simple flick of a switch, the Air Locker engages pneumatically to lock the differential, ensuring both rear wheels turn together for maximum grip on challenging terrain.

Ideal for serious off-road enthusiasts and Jeep owners who demand superior traction without compromising daily drivability, the ARB Air Locker allows you to tackle mud, rocks, sand, and uneven surfaces with confidence. When disengaged, it functions as a standard open differential, maintaining smooth handling and tire wear on pavement.

Key Features

The ARB Air Locker combines innovative design and robust engineering to deliver dependable performance in all conditions. Key features include:

• Instant pneumatic locking system activated via in-cab switch
• 32 spline design tailored for Jeep Wrangler JL and Gladiator JT M220 rear axles
• Allows activation at any vehicle speed for on-the-fly traction control
• Prevents axle shafts from turning independently, maximizing traction
• Operates as a conventional open differential when unlocked for normal driving
• Durable construction engineered to withstand harsh off-road environments
• Reduces vehicle damage and environmental impact by enabling controlled, slower driving
• Seamless integration with factory axle components and drivetrain

Construction & Design

ARB’s Air Locker is crafted from high-strength materials designed to endure the rigors of off-road use. The internal locking mechanism employs a pneumatically operated system that is both reliable and responsive. Precision engineering ensures smooth engagement and disengagement without compromising the integrity of the differential gears. The 32 spline configuration matches the M220 axle specifications, guaranteeing a perfect fit and optimal power transfer to the wheels.

The robust housing and components are built to resist wear and damage from impacts, dirt, and moisture, ensuring long-lasting performance and peace of mind during demanding adventures.

Installation & Fitment

The ARB 32 Spline Rear Air Locker is designed as a direct replacement for the factory open differential in the rear M220 axle of 2018–2026 Jeep Wrangler JL and Gladiator JT models. Installation requires professional mechanical expertise and proper tools to ensure correct fitment and operation. No major modifications to the axle or drivetrain are necessary, making it a straightforward upgrade for those seeking enhanced off-road traction.

Proper setup of the pneumatic system and in-cab switch is included in the installation process to enable reliable activation and control.

What's Included

• ARB 32 Spline Rear Air Locker differential assembly
• Pneumatic actuator and locking mechanism
• Installation hardware and seals
• Detailed installation instructions

Ideal For

This Air Locker is perfect for Jeep Wrangler JL and Gladiator JT owners who frequently encounter challenging off-road conditions such as rocky trails, mud, sand, and steep inclines. It is especially suited for enthusiasts who require dependable traction without sacrificing everyday drivability. Whether you are a weekend trail rider, overland adventurer, or competitive off-road driver, the ARB Air Locker delivers enhanced control and confidence in diverse terrain.

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.