This weld-in bung allows anO2 sensor to be screwed into your exhaust system. It’s required for customexhaust systems, and is also useful for air/fuel ratio measurements whendyno testing. A threaded plug is included to cap off when not in use.
- Locate bung as close to engine a possible, without exceeding themaximum operating temperature for the O2 sensor. The suggested locationis just down-stream of the merge-collector on each bank of cylinders.
- Sensors located after upstream exhaust system leaks or too close toexhaust outlets are susceptible to poor readings or influence of ambientair
- O2 Sensors exposed to exhaust gasses with too high amount of un-burntfuel can lead to misleading readings. A possible lean reading.
- Locate sensor/bung 90° to exhaust gas stream.
- Locate sensor/bung in tube with a minimum of 10° up angel to preventliquid build up in sensor element.
- Use stainless steel welding wire or rod when installing bung.
- Do not have bung plug or a oxygen sensor installed when welding bungin place.
- Welding can distort the bung so it is recommended you chase/tap thethreads of the bung after welding.
- When installing O2 sensor or plug, use an O2 sensor compatible hightemperature resistant grease on the threads.
- Use tightening torque suggested by O2 senor manufacturer.
*picture may not depictactual item
