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Delivery estimates: UK stock 24–48 hours · EU stock 5–7 working days. Check bumper and special-order lead times.
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ARB RD101 Air Locker – Dana 30, 27 Spline 3.54 & Lower

ARB RD101 Air Locker – Dana 30, 27 Spline 3.54 & Lower
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ARB RD101 Air Locker – Dana 30, 27 Spline 3.54 & Lower
The ARB RD101 Air Locker is a driver-selectable pneumatic locking differential for the Dana 30 application. It locks the differential on demand for off-road traction and allows normal differential... Read More
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£994.00
Ex Tax: £994.00
  • Stock: Usually in UK/EU Stock
  • Brand: ARB
  • Weight: 14.00kg
Product Views: 10
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Images are for illustrative purposes only. Product details such as design, finish, and components may vary depending on application. Images represent general quality and style and may not exactly match the supplied item. Specifications do not form part of any contract unless explicitly stated.

Estimated delivery: UK stock 24–48 hours; EU stock 5–7 working days. Stocked bumpers around one week; made-to-order bumpers around 3–4 weeks. Special-order manufacturer lead times are confirmed with you before ordering. These are estimates; check the item-specific availability and delivery guide.

Ordinary consumer distance orders normally allow cancellation until 14 calendar days after delivery, followed by 14 days to send goods back. Necessary inspection and opening ordinary packaging do not by themselves remove this right. No fixed restocking fee applies to statutory consumer cancellation. Whole-order cancellation includes standard outbound delivery. Faulty-goods rights are additional.

Special sourcing, import or manufacture of a standard catalogue product does not by itself remove cancellation rights. Ask for postal/courier return instructions; no customer visits or in-person returns. See our Sales Terms and optional cancellation form. Earlier purchases retain applicable earlier promises.

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The ARB RD101 Air Locker is a driver-selectable pneumatic locking differential for the Dana 30 application. It locks the differential on demand for off-road traction and allows normal differential operation when disengaged.

Fitment and specifications

  • ARB part number RD101
  • Axle specification Dana 30
  • Axle shaft splines 27
  • Ratio 3.54:1 and numerically lower
  • Operation Pneumatic, selectable differential lock

Vehicle application examples

  • Jeep CJ – CJ5 / CJ6 / CJ7 / CJ8 · front axle · 1971 onward. Confirm axle specification.
  • Jeep Cherokee – XJ · front axle · 1971 onward. Confirm axle specification.
  • Jeep Grand Cherokee – ZJ / WJ · front axle · 1971 onward. Confirm axle specification.
  • Jeep Wrangler – YJ / TJ · front axle · 1971 onward. Confirm axle specification.
  • Jeep Wrangler – JK · front axle · 2007 onward. Confirm axle specification.
  • Jeep Cherokee – KJ / KK · front axle · 2001 onward. Confirm axle specification.
  • Jeep Cherokee – Full-size SJ · front axle · 1971–1973. Confirm axle specification.
  • Jeep Grand Wagoneer – SJ · front axle · 1971–1973. Confirm axle specification.

The catalogue image illustrates the ARB Air Locker range. Confirm the exact axle before ordering.

ARB application chart · ARB service and parts manuals

Related equipment

ARB Air Locker Manifold Kit

Frequently asked questions

How do I confirm that RD101 fits my vehicle?

Match the axle housing, spline count, ratio and any factory-locker option to this part number. The vehicle name alone cannot confirm fitment.

Does this Air Locker require a compressor?

Yes. Use a compatible onboard air supply. A compressor is purchased separately.

Can I fit it to the front or rear axle?

Use it in the axle position specified for your differential and vehicle. Engage a front locker only off highway.

How do I check the gear ratio?

Check the axle tag or verify the crown-wheel and pinion tooth counts. Confirm the carrier break with your installer.

Do I need a specialist installer?

Differential fitting requires the correct tools, bearing preload and backlash settings. Use a differential or axle specialist.

What information should I send if I am unsure?

Send your vehicle year, axle position, axle identification, spline count and ratio. Include whether the axle is original or has been swapped.

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