Looking for a part number on a four wire O2 sensor.

Do the 94+ O2 sensors fit the 90-93?

 

No, the '90-'93 cars had one-wire sensors so any 4-wire you get has to be made to fit (requires a +12v source for heater, Gnd for heater, signal wire to ECU and Gnd for signal wire). I bought one for a mid-90s Chrysler (Dodge Intrepid, mayhaps) for ~$37 because it was the cheapest I found.

 

brian,

thanks, i know it has to be wired into a 90-93. i'm searching ebay for a cheap, new bosch O2 (4 wire). i found some for 94-05, just wondering if they fit (thread/pitch)

 

All bung threading is standardized. I got mine on Ebay:

http://cgi.ebay.com/ebaymotors/OXYGE...24083965QQrdZ1

 

so this should work?

 

Should work. The length looks quite big in the picture. Make sure you have clearance.

 

bruce, who was the manufacturer of the unit you bought?

 

NGK

 

awesome, thanks!

 

http://www.ngksparkplugs.com/techinf...000&country=US

They go under "NTK"

 

looky what i found:

http://mymiata.paladinmicro.com/Miata4-WireO2.htm

 

Yup, Cliff's old instructions are where I got my part #13275 . See, not everyone on M.net is an unhelpful *** who knows nothing about cars

 

I used those instructions and that part # too. Worked great. The clerk at the parts shop was pleased that he didn't even have to look it up since I had the part # .
I highly recommend the heated sensor upgrade!