Adam Ebady

I have a 1996 Civic EX but my issue is that it has a d15b motor swap which has always giving me problems at the auto parts store because they always look it up by car model not by motor so I don't know what to tell them when I need a part for my motor. Does anyone know if the O2 sensors are interchangeable? Also what American car came with a d15b variant that I can just tell the auto parts store to save a bunch of headaches thank you in advance

TomCat39

The D15B vtec did not come on any USDM cars it's JDM only. Most parts for the D16Z6 is compatible with the D15B vtec.

You should need the 4 wire o2 sensor from any 92-95 civic DX/LX/EX/Si. Denso is the ones I have used without issue to date.

Adam Ebady

thank you I'm gonna try rn

Caoboy

Isn’t that going to depend on the harness he’s using?

OP what harness are you using?

Adam Ebady

all I know is that its obd2 but here's some pics

TomCat39

Good catch, thank you.

I'm not familiar with the OBD2 cars to know if the O2 sensors plugs changed. That is a 4 wire O2 and initial look it looks very much like the 92-95 but the outside tabs could be off from the 92-95. Let me go take a pic of mine so we can compare.

Caoboy

If it's the chassis harness go with what the chassis/ECU requires, in my opinion.

I could be wrong though. I usually am

Adam Ebady

do you have a link?

TomCat39

Here is the OBD1 4 wire O2 sensor pics, male and female.











It looks to me like the OBD2 went fatter and shorter while the OBD1 is narrower and taller.

Adam Ebady

ty

TomCat39

Looking it up on autozone it shows the Denso 234-4099 as the upstream O2 for the OBD2 EX.

This same sensor Amazon reports fits my 92-95.

tony_2018

UM....the sensor male plug goes inside the harness female plug...

TomCat39

Ummm, yeah? Female is pictured on the harness in my pics with measurements as well as the male on the sensor is shown in the plastic bag still also with measurements....

Not sure where you are questioning.

Caoboy

OP are you still running the trimanifold with the cat attached to the header or are you running an EX exhaust manifold and cat under the car?