I need the sensor before the catalytic convertor. It looks like there are two options; a universal one that looks like you have to strip the wires and put the connector together and the OE one with the connector ready. The price is $55 for the first one and $85 for the second. Is the cheaper one okay?

 

 

 

96 Outback

The sensor body - business end - is identical (assuming the same manufacturer). If you have a soldering kit, or weather-proof connectors, the universal would do exactly the same job as the OE style.

 

3-wire = 2 heater, 1 output signal, the sensor metal shell does the grounding

4-wire = 2 heater, 1 signal, 1 ground

 

Save the money.

thanks