Replacement O2 sensor for MTX-L, LC-1, LC-2, LM-1 , LM-2 controllers

Sensor only, not a complete kit.  No gauge included.

NOTE: The older 4.2 sensor will not work with a 4.9 Wideband. The newer 4.9 sensor will not work with the older wideband. Match your plugs to make sure your order the correct sensor.
* Sensors are not returnable *