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Rsx o2 sensors are still 4 wire.They look the same as any other 4 wire o2 from Honda,I'm not 100% sure if the signal output is the same as other Honda 4 wire,but I have used Integra 4 wire o2's on one swap and havent had a problem or noticed anything strange on a tailpipe wideband.
 

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they all have 5 wires...and the same plugs (just to make it worse)

the Semi-wide-band ones have two black wires fot eh heater cct, the narrow band ones have two white wires, without looking at the PN's that's the only way I know to tell them appart.

they work nothing like each other and are NOT interchangeable
 

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drhonda said:
The one that i bought was part # 36532-PRB-AO1
crap...i think i bought the wrong one. Did I? I'm confused now.

I think you may have, that is the part # for the secondary o2. Can you take a pic of it and post it on here?
 
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