I am getting 2 codes, i forget which ones. They are the heater for both front o2 sensors. I was wondering if its only the heater can u use the universal ones that are so much cheaper? what brand do you suggest?and where should i go to get some?

 

The 2 front o2 sensors have a built in heater core.I have replaced both with the universal walker sensors, i had to splice the wires.
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