The ARB High Pressure Bulkhead Kit (170114) is a complete, genuine ARB solution for securely connecting your air system to newer ARB Air Lockers using a 3.5mm copper air line. This O-ring style bulkhead fitting is designed for high pressure applications and provides a reliable, leak free seal through axle housings or differential covers.

This kit includes all required internal and external components needed to properly plumb a high pressure air line connection, making it ideal for new installs, repairs, or system upgrades. Designed specifically for use with newer ARB Air Locker designs, this bulkhead ensures proper airflow, sealing integrity, and long term durability in harsh off-road environments.

Note: This kit does not include the 6mm airline.

Specifications

• Brand: ARB
• Part Number: 170114
• Fitting Style: O-ring bulkhead
• Airline Size: 3.5mm copper line
• Pressure Rating: High pressure air systems
• Application: ARB Air Locker air system plumbing

  Includes:

• Banjo bolt
• Banjo washer
• Banjo elbow
• Compression fitting body
• Outer compression nut
• Center compression nut
• Ferrule
• Spacer
• Bulkhead body
• Push in fitting
• 3.5mm copper air line
• O-ring

Fitment

• Fits newer ARB Air Locker systems
• Designed for use with 3.5mm copper air line
• Compatible with O-ring style ARB bulkhead applications

Tech Insight

ARBs O-ring style bulkhead fittings provide improved sealing reliability over older compression only designs, especially in high pressure locker systems. Proper bulkhead sealing is critical to maintaining consistent locker engagement and preventing air leaks caused by axle housing flex, vibration, or debris intrusion.