I drive a 1997 Honda Civic LX Manual transmission and the check engine codes read that I need a new upstream o2 oxygen sensor. I was told that Denso is the way to go, but could someone please let me know which one I should get? What is the difference between the 234-4209 and the 234-4065? I also see a 234-4099 but I think that is for automatic transmission? How much should I expect to pay? I've seen some crazy oxygen sensors for over $100, then I've seen some generic for less that $20. If someone with more experience could provide some advice I would greatly appreciate it. Thanks!

 

A CEL code can't tell you whether the O2 sensor is bad. Do the electrical troubleshooting outlined in the service manual.

Post these questions in the Value sticky.

 

Denso and NTK/NGK sensor's are OEM to Honda. I much prefer them for sensors, spark plugs and other electrical items.

Upstream:
More Information for DENSO 2344099

Downstream:
More Information for DENSO 2344065

Around $55 shipped for OEM equivalent parts is the way to go. If you use rockauto be sure to locate a 5% discount code.

 

You buy the best that money can buy.

 

part finder from NGK website tells you exactly what you need to buy
PartCat
then go on ebay and find the 3rd from the cheapest lol

or go to one of these online stores:
autopartsway.com
partsgeek.com

 

Thanks, does anyone know what the difference is between the Denso 234-4209 and the 234-4065 and the 234-4099?

 

4065 is post cat, 4099 is pre-cat and 4209 is only the sensor with out pigtail get the ones in links I provided and you are done.