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I have a 97 prelude (SH) and after doing a lot of research to figure out if there was a difference in O2 sensors for my car there wasn't. A lot of sites will show that there is an upstream and downstream but when I ordered mine, I chose front and rear and when they came they were the same pt # and same O2 sensors. I installed them and everything worked fine and the code my car was flagging didn't come back after I reset the computer.
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