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GA4193 - Air Locker - 24 Spline - 93 On by ARBTransmission or Drivetrain Part Land Rover Range Rover Defender, Range Rover

GA4193 - Air Locker – 24-Spline

- €1.340,00
€1.340,00
€1.340,00 - €1.340,00
€1.340,00
OEM Part
OEM: Made by an Original Equipment Manufacturer. This part is made by an original equipment manufacturer or under their license, ensuring compatibility and quality.
Brand ARB
Air Locker - air-operated selectable locking differential for the later Rover-type differential with 24-spline halfshafts, suitable for front or rear axle use.

Replaces the standard differential centre inside the axle casing. In its default state it behaves as a conventional open differential, allowing the wheels to turn at different speeds on the road. When engaged, compressed air locks the two side gears together so both halfshafts are driven at the same speed, delivering full drive to both wheels when traction is lost at one.

Operation requires a 12V air supply - an on-board compressor, air line and control switch.

Installation is a full differential rebuild: the crown wheel and pinion must be re-shimmed and backlash reset, and the axle casing drilled to route the air line to the differential.

Halfshaft spline count must be confirmed before ordering - this unit is for 24-spline axles only.

Vehicle Model Land Rover Defender up to 2016
Range Rover Classic up to 1994
Fitment Notes ARB Air Locker — fits 24-spline differential, 1993 onwards.
Alternative Codes
GA4193DA4193

Available to order 2–3 weeks

Not currently in stock. Order now — typically ships within 2–3 weeks.

Need it faster? Contact us about express import (2–5 business days).

When will my order arrive?

This item is ordered from our supplier on request. Typical lead time is 2–3 weeks from order confirmation.

  • Netherlands / Belgium / Germany: 2–4 working days after dispatch.
  • Other EU countries + UK: 4–8 working days after dispatch.
  • Outside EU/UK: contact us for an estimate.

Need it faster? Express import available in 2–5 business days — contact us before ordering.

Job kits containing this part

This part is included in 0 job kit(s) below. Pick the kit that matches your vehicle and job, then add what you need.

Frequently asked questions

What does the GA4193 Air Locker do?
GA4193 is an ARB air-operated locking differential for the later Rover-type diff with 24-spline halfshafts, fitted to front or rear axles. It runs as an open differential until engaged, then locks both side gears for full drive to both wheels.
What's needed to run a GA4193 Air Locker?
Operation needs a 12V compressed air supply: an on-board compressor, air line and control switch, none of which are supplied with the unit.
Is fitting GA4193 straightforward?
No, it's a full differential rebuild. The crown wheel and pinion need re-shimming with backlash reset, and the axle casing must be drilled for the air line, so it's typically a job for a specialist axle workshop.
Which Land Rover models does GA4193 fit?
GA4193 fits the later Rover-type differential from 1993 onwards, as used on the Defender and Range Rover Classic. Confirm your axle uses a 24-spline halfshaft before ordering, since spline count varies across production years.