Air Locker differential lock – Nissan H233B 33 spline (RD135) – ARB

The ARB Air Locker differential for Nissan H233B (model RD135) is a high-end solution to drastically improve the traction of your Nissan Patrol Y60 or Y61. Designed by ARB, the world leader in locking differentials, this system offers instant, on-demand locking controlled directly from the cockpit. 

🔥 Highlights

• 100% On-demand traction: fully locks both wheels to maximize grip in difficult conditions.
• Easy pneumatic activation from inside the vehicle, without leaving your seat. 
• Ultra-rugged two-piece design, with few moving parts for maximum reliability
• Operates as an open differential when unlocked, for normal road handling. 

🚗 COMPATIBILITY

This differential is intended for:

Rear H233B or front H233B axle in conjunction with our RCV 33-spline axle shaft kit

Number of splines: 33 teeth (requires the installation of appropriate axle shafts for the front)

⚙️ KIT CONTENTS

• ARB RD135 Air Locker differential
• Activation switch
• 12V solenoid valve
• Air line tubing
• Bulkhead fitting and connectors
• Installation instructions
  (Air compressor required, not included) 

The kit does not include bearings, and these must be purchased separately. (Timken #32010X / ARB #160116)

💡 HOW IT WORKS

The ARB Air Locker is a pneumatically locking differential. Once activated, it prevents the internal gears from rotating independently, thereby linking both axle shafts for maximum traction. When deactivated, it behaves like a standard differential. Activation can be performed at any speed, making it a very practical solution for technical off-roading. 

🛠️ INSTALLATION AND AIR COMPRESSION

This system requires a 12V air compressor (sold separately) to actuate the lock. The included components allow you to connect the air to the differential with the switch and valve.