ARB Air Locker — Nissan H233 (31-Spline, RD134)
An open differential loses drive the moment one wheel lifts. The ARB Air Locker for the Nissan H233 axle replaces the factory carrier with a driver-selectable, air-operated lock: engage it and both wheels turn together for maximum traction, disengage it and the axle returns to smooth, open-diff behaviour on the road.
This unit is machined for the 31-spline H233 differential. On-demand engagement gives you a fully locked axle only when the terrain demands it, so there's no permanent penalty to steering, ride or tire wear during everyday driving.
- Selectable, air-operated 100% differential lock
- Forged internals for the H233 31-spline axle
- Instant engagement from an ARB air source (compressor or tank)
- Bolt-in replacement for the factory carrier
Trade-off: an Air Locker requires a compressed-air supply and professional installation with correct ring-and-pinion setup.
| Specification | Detail |
|---|---|
| Type | Selectable air-operated locking differential |
| Differential / axle | Nissan H233 |
| Spline count | 31 |
| Actuation | Compressed air — ARB air source required |
| Operating pressure | 100 psi (nominal) |
| Part number (MPN) | RD134 |
| GTIN | 9332018004031 |
| Brand | ARB |
Fit is set by differential type and spline count — verify your H233 axle and 31-spline shafts before ordering. Browse more Differentials & Lockers or the full ARB collection.
Presented by Overland Kitted
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