ARB Air Locker Differential Lock Kit INEOS Grenadier & Quartermaster Front & Rear

Pre Order Deposit Expected AUG - SEPT 2026

Pricing Coming Soon

Can be operated as a single or twin locker configuration

ARB Air Locker Differential Lock Kit | INEOS Grenadier
Unlock Maximum Traction. Built for Mission Ready Adventures.

Take your INEOS Grenadier to the next level with the legendary ARB Air Locker — a premium selectable locking differential engineered to deliver traction exactly when you need it and remain civilised when you don’t. Activated instantly via a dash-mounted switch, the Air Locker provides true 100% drive across the axle, helping maintain momentum through mud, sand, ruts, rocks and technical terrain.

Unlike automatic lockers that permanently alter on-road behaviour, the ARB Air Locker gives Grenadier owners complete control — open for normal driving, locked for maximum off-road capability.

Designed and manufactured in Australia, ARB Air Lockers have become one of the most recognised traction upgrades in the 4WD industry and are trusted in some of the toughest off-road environments globally.

Key Features

✓ Selectable differential lock — engage only when required
✓ Sends equal drive to both wheels on the selected axle for maximum traction
✓ Air operated engagement using compressed air and dash controls
✓ Heavy-duty nodular iron carrier construction for exceptional strength
✓ Forged internal gears designed for extreme torque loads
✓ Patented timed locking mechanism for fast, positive engagement
✓ High-temperature bonded seals tested through extensive activation cycles
✓ Retains normal differential behaviour when unlocked
✓ Supported by ARB’s 5-year warranty program

Why GrenX Recommends Air Lockers for the Grenadier

The INEOS Grenadier already delivers outstanding mechanical capability, but traction is ultimately limited by available grip. An Air Locker transforms technical terrain performance by ensuring available torque reaches the wheel with traction — reducing wheelspin, improving control and lowering unnecessary drivetrain shock compared with repeated throttle applications.

Ideal for:

• Touring & expedition builds
• Remote area travel
• Mud and sand driving
• Rock crawling
• Heavy vehicle and GVM upgrade applications
• Customers running larger tyres and demanding recovery conditions

Compatibility

• Vehicle: INEOS Grenadier
• Body Styles: Wagon & Quartermaster
• Position Options: Front / Rear
• Air Compressor Required: Yes (ARB compressor recommended for optimal operation)

Compatibility & Operation

Compatible with INEOS Grenadier models equipped with either open differentials (non-factory lockers) or factory electronic locking differentials

The ARB Air Locker system operates independently of the factory locking strategy and provides the driver with direct control over differential engagement. This allows users to manually engage locking differentials when required, including situations where factory software logic may otherwise restrict operation.

This can provide increased flexibility for technical off-road driving and controlled traction management across varying terrain conditions.

Important Usage Information

Off-road differential lockers significantly alter vehicle handling characteristics when engaged.

Driver training and familiarisation are strongly recommended prior to use.

When activated, steering effort may increase, turning radius can change, and drivetrain loads may rise if used incorrectly. Lockers should only be engaged where conditions require additional traction and disengaged when normal traction returns.

For best results:

• Engage lockers before losing momentum
• Avoid aggressive throttle application while locked
• Use only on loose, slippery or off-road surfaces unless conditions specifically require otherwise
• Follow vehicle and locker manufacturer operating procedures

Professional installation and setup recommended.

Built Mission Ready.

Supplied & Installed by GrenX. 

For customers building the ultimate Grenadier, ask us about complete traction packages including compressors, diff breathers, suspension and expedition-ready drivetrain upgrades.