
- Stock: Usually in UK/EU Stock
- Brand: ARB
- Weight: 14.00kg
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.
Ask a Question About This Product
The ARB RD111 Air Locker is a driver-selectable pneumatic locking differential for the Toyota 8-inch IFS, 53 mm application. It locks the differential on demand for off-road traction and allows normal differential operation when disengaged.
Fitment and specifications
- ARB part number RD111
- Axle specification Toyota 8-inch IFS, 53 mm
- Axle shaft splines 30
- Ratio 3.91:1 and numerically higher
- Operation Pneumatic, selectable differential lock
Vehicle application examples
- Lexus GX – front axle · 2003 onward. Confirm axle specification.
- Toyota Land Cruiser Prado – 120 / 150 / 250 · front axle · 2003 onward. Confirm axle specification.
- Toyota Fortuner – front axle · 2005 onward. Confirm axle specification.
- Toyota Hilux – front axle · 2005 onward. Confirm axle specification.
- Toyota 4Runner – front axle · 2003 onward. Confirm axle specification.
- Toyota Tacoma – front axle · 2005 onward. Confirm axle specification.
- Toyota FJ Cruiser – front axle · 2005 onward. 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
Frequently asked questions
How do I confirm that RD111 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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