Description
O2 Sensor Bung
- Compatible with Bosch 4.2 and 4.9 wideband sensors
- Ideal for AEM and Innovate AFR gauges, and many others !
- Sensor bung to be welded onto your exhaust piping
- Thread : M18x1.5
- Made by AEM (part no. 30-4005)
This mild-steel O2 sensor bung is welded into your exhaust piping and allows you to install a wideband UEGO AFR sensor from the most common manufacturers : Bosch 4.2LSU, Bosch 4.9LSU, AEM Wideband, Innovate, etc.





