# Help finding a part.   o2 sensor search.  VIN question.

**URL:** <https://forums.speedlife.net/t/help-finding-a-part-o2-sensor-search-vin-question/13078>\
**Category:** NYSpeed Automotive\
**Created:** [June 8, 2006, 2:47pm UTC](https://forums.speedlife.net/t/help-finding-a-part-o2-sensor-search-vin-question/13078 "2006-06-08T14:47:16Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Clean\_Baldy](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/clean_baldy/32/7308_2.png) [@Clean\_Baldy](https://forums.speedlife.net/u/Clean_Baldy)\
**Post date:** [June 8, 2006, 2:47pm UTC](https://forums.speedlife.net/t/help-finding-a-part-o2-sensor-search-vin-question/13078/1 "2006-06-08T14:47:16Z")

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I am searching for a new O2 Sensor for a 2002 Oldsmobile Alero. There are two, one before and one after the Cat. The front one is throwing codes, causing a failed inspection. So, in my search, I ran into a confusing aspect of my search.

Looking for parts online, it says VIN “F” or VIN “T” for the O2 sensors I’m finding.

I am guessing that the car is an “F” as 1G3NL52 **F** 62C435322 is the VIN number.

Am I correct in that assumption?

Also, if anyone is familiar with O2 Sensors, is one brand just as good as the next? I found one on ebay for $45 and yet there are others that are $100…

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**Author:** ![jeeves744](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeeves744/32/7619_2.png) [@jeeves744](https://forums.speedlife.net/u/jeeves744)\
**Post date:** [June 8, 2006, 2:48pm UTC](https://forums.speedlife.net/t/help-finding-a-part-o2-sensor-search-vin-question/13078/2 "2006-06-08T14:48:38Z")

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just go to carquest or some place like that to buy one.