2.5" Vent Adapter for HOLDEN HJ HX HZ WB
2.5" Vent Adapter for HOLDEN HJ HX HZ WB
Replacement 2.5-inch vent adapter for Holden HJ, HX, HZ and WB models. Designed to connect a compatible ventilation outlet to 2.5-inch air ducting, helping direct airflow through the vehicle's interior ventilation system.
Ideal for classic Holden restorations, heater and air conditioning installations, or replacing a missing, cracked or damaged vent adapter. This adapter provides a connection between compatible ventilation components and flexible air ducting.
Features:
- 2.5-inch vent adapter for Holden HJ, HX, HZ and WB models
- Designed to connect compatible ventilation outlets to 2.5-inch air ducting
- Helps direct airflow through the vehicle's interior ventilation system
- Suitable for compatible heater and air conditioning installations
- Useful for replacing missing, cracked or damaged vent adapters
- Helps provide a secure connection between the vent outlet and ducting
- Ideal for interior ventilation repairs and classic Holden restorations
Vehicle Compatibility:
- Holden HJ
- Holden HX
- Holden HZ
- Holden WB
Connection Size:
- 2.5-inch (approximately 63.5mm) nominal duct connection
Installation Notes:
Before installation, inspect the existing ventilation outlet and ducting to confirm the correct connection size and mounting arrangement.
Compare the replacement adapter with the original fitting to ensure the shape and connection points are suitable for your vehicle.
Fit the adapter securely to the compatible ventilation outlet and connect the appropriate 2.5-inch air ducting. Ensure the ducting is properly secured and routed without sharp bends, kinks or obstructions that could restrict airflow.
Once installed, operate the heater or air conditioning system to check that air flows correctly through the connected vent.
Please Note:
This listing is for one 2.5-inch vent adapter only. Air ducting, vents and other ventilation components are not included unless otherwise specified.
Please confirm the adapter's shape, mounting arrangement and duct connection size before ordering, particularly if your vehicle has a modified or aftermarket heating and air conditioning system.




















