ARB / Differentials & Axles

ARB RD165 Air Locker Differential Kit

£1,182.32 VAT included. Shipping calculated for your destination.

In stock

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Fitment checked before you order

Send the vehicle, engine and current setup if you want us to confirm the exact application before checkout.

Technical specifications
Manufacturer ARB
Product Type selectable differential locker
SKU XADLRD165
Supplied As

Summary

ARB RD165 Air Locker Differential Kit adds driver-controlled differential locking for traction when an open differential would allow one wheel to spin. Unlike a permanently locked differential, a selectable Air Locker can remain disengaged for normal driving and be activated when extra traction is required. Those who enjoy heading off the beaten track in their 4x4 know that even the most familiar tracks can present you with unexpected conditions.

Best For

  • Off-road builds needing selectable traction at the axle.
  • Vehicles retaining normal differential operation for road use.
  • A planned locker and onboard-air installation using matched ARB components.

How Selectable Locking Changes Traction

An ARB Air Locker uses a compatible 12V compressed-air supply to engage the locking mechanism inside the differential. When selected, both wheels on that axle receive drive together. The useful decision is not simply front or rear: axle type, spline count, gear ratio and differential specification must all match the locker code.

Key Specs

  • Manufacturer: ARB
  • Product type: selectable differential locker
  • SKU: XADLRD165
  • Supplied as:

Fitment And Setup Checks

Confirm the exact axle and differential specification, including position, spline count and ratio requirements. Plan a compatible ARB air compressor, switching and professional differential installation as separate parts of the build unless the package description expressly includes them.

Delivery, customs and taxes

Know the landed cost before you order

For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. For customers outside the UK, local customs and taxes remain your responsibility, and shipping is shown at checkout. If a shipping option is not available, email us and we will prepare a tailored quote.

Lead times and urgent orders

Check timing before you commit

Many of the products we sell are made to order, imported or custom built, so a lead time may apply. If you need a part urgently, contact us before ordering and we will confirm the expected delivery timeframe and process.

Questions before you order

Frequently asked questions

Does an ARB Air Locker need a compressor?

Yes. ARB Air Lockers use a compatible 12V air compressor to engage and disengage the locking mechanism.

Will this locker fit any vehicle with the same axle position?

No. Differential model, spline count, ratio range and axle details must match the exact locker code.

Is professional installation sensible?

Yes. Differential setup requires accurate bearing preload, backlash, sealing and air-line routing.

Fitment first

Check fit before you order

Model year, drivetrain, hardware and existing modifications can all change what fits. Send us the vehicle details and what you are running now, and we will confirm the right choice before you commit.

Need help with this product?

Send us your vehicle, year, current setup and any fitting date, event, trip or deadline before ordering. We will help check fitment, product choice and timing.

ARB RD165 Air Locker Differential Kit
ARB RD165 Air Locker Differential Kit
In stock £1,182.32