Land Rover
ARB AIR Lockers for Discovery - Range Rover - Defender 90
Step1: Use the Chart below to find your application.
1 If vehicle was manufactured during 1993, check spline count.
2 Air Locker not available for vehicles equipped with high load
option.
3 190201 ring gear spacer required. Longer ring gear
bolts (not supplied) are also necessary - (Land Rover part no.
576521).
4 When an RD127 Air Locker is to be installed in Range
Rovers manufactured prior to 1980 (approx.), special carrier
bearings
(No. K11300/K11162) may also be necessary - Land Rover
part no. RTC3426.
5 Some vehicles have crown wheel bolts which
cannot be reused and must be replaced. Consult service manual.
6 P38A is most commonly found in traction control equipped
vehicles. Identify P38A type diff by large 205mm [8.07"] flange
diameter
P38A was not used on North American delivered
Discoverys - use RD128.
Step2: Enter the corresponding Part Number (Example:"RD127") below.