ARB Air Locker — Nissan H233B (33-Spline)
Traction disappears the instant an open differential spins one lifted tire. The ARB Air Locker for the Nissan H233B rear axle removes that limit with a driver-selectable, air-operated lock: engage it and both wheels turn together for full traction over rocks, ruts and sand; release it and the axle behaves like a normal open diff on the road.
This carrier fits the heavier-duty 33-spline H233B differential used in Nissan D21, Frontier, Xterra and Pathfinder applications running the upgraded axle shafts. On-demand engagement means you lock only when you need to, with no compromise to street handling or tire wear.
- Selectable, air-operated 100% differential lock
- Forged internals for the 33-spline H233B axle
- Instant engagement from an ARB air source
- Bolt-in replacement for the factory carrier
Trade-off: you'll need a compressed-air supply (an ARB compressor is the common choice) and professional setup with the correct ring-and-pinion ratio.
| Specification | Detail |
|---|---|
| Type | Selectable air-operated locking differential |
| Differential / axle | Nissan H233B (rear) |
| Spline count | 33 |
| Actuation | Compressed air — ARB air source required |
| Operating pressure | 100 psi (nominal) |
| Part number (MPN) | RD135 |
| GTIN | 881348008206 |
| Brand | ARB |
Fitment is set by differential type and spline count, not model year — confirm your 33-spline H233B axle before ordering. See more Differentials & Lockers or the full ARB collection.
Prop 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer and/or reproductive harm. For more information go to www.P65Warnings.ca.gov.
Presented by Overland Kitted
The Dispatch
Gear We Like: DVA Mechanics for the Grenadier
MAXTRAX Introduces Universal Mounting Pins for MKII, XTREME, and LITE Boards
