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The Haltech O2 sensor weld-on bung accepts M18x1.5 oxygen sensors and ships with a copper washer and a blanking plug. It provides a ready-made weld-in mounting point for wideband or narrowband probes, simplifying fabrication where a serviceable sensor location is required. The included blanking plug lets you seal the bung until the sensor is installed.
Haltech O2 Sensor Weld-On Bung w/Copper Washer & Blanking Plug M18 x1.5
