What type of O2 Sensor do i need. I have 1997 chevy blazer 6 cyclinder four wheel...

Mitchell L

New member
...drive truck? A friend of mine is going to change the sensor but i have no clue what kind of sensor i need. When i look it it up there are all kind from universals with all different number of wires to front or rear location ones. I have no clue which one i need to order.. HELP PLEASE
 
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