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02 sensor replacement
My 2001 corolla has 200,000 KM on it (125K miles) and I am thinking about changing the upstream 02 sensor. There is no check engine light on, but I know these things wear out gradually. The dealer (Canada) wants $400 for just the part. The local parts store can get me an NGK for about $180. Sparkplugs.com has an OEM Denso for about $75!!
Anyone have any experience changing this sensor on a Corolla? I've done 02 sensors on other vehicles and found it makes a big improvement. Why the big price difference?
Last edited by vanhorne; 12-31-2011 at 04:52 PM.
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