Question about 2003 Mitsubishi Lancer
I am not certain which o2 sensor but I can tell you that replacing an o2 sensor is typically an easy affair (1-10 I'd give it a 4, 10 being the most difficult) Just be patient and take your time to properly track down the wiring harness and when installing route the same (whenever possible) Use a copper never-sieze on the threads of the sensor. Cost for the sensor will be @ $150 + - or so.
I hope this may have assisted you,
Posted on Jun 06, 2010
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Posted on Jan 02, 2017
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