O2 Sensor

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Senior Member
IN my 89crx hf ihave a dohc zc andi need to know which o2 senser i use to replace the stock.... along with the coolant temp sensor?
For best results match it to your ECU. So if you're running a PG7, get 89 Integ sensors. If PM6, run 91 Civic sensors. If PM7, I think it's better to run integ sensors.