Hi guys , I finally removed my rust/rounded 02 sensor nuts today to put in my new 02 sensors.

The two I ordered for my non california 2000 3.4 5spd.


234-4161
4WD; Exc. Calif.; Manual Trans; Exc. Calif.; DENSO is the O.E. Manufacturer / Oxygen Sensor- Upstream


234-4154
4WD; Exc. Calif.; Manual Trans; Exc. Calif.; DENSO is the O.E. Manufacturer / Oxygen Sensor-Downstream

I noticed that both denso sensors are identical excluding the longer pigtail on the upstream one.When compared to OEM , the new denso sensors have a thinner probe.Also , the upstream oem one has 3 stacked hoels while the denso has 4 stacked holes.You can also see the noticable size difference.Anybody else notice these differences with your new denso replacements?Any issues?CELs?



Cheers!