I think that is a good guess puredrive but the Denso site info is not very clear. I would call them and comfirm. The correct NGK post cat sensor is #23099 fwiw.

DENSO Sales California
3900 Via Oro Avenue
Long Beach, CA 90810
United States
888-96-DENSO

 

Just to add to the thread. I emailed Denso USA and this were their response.

Hi Eric,

Thank you for your interest in DENSO oxygen sensors. According to our application information DENSO does not have an upstream O2 sensor available. However Jeep / Chrysler may have swapped information, can you please provide the original part number so that we may be able to cross over. The downstream part number for your application is 234-4078.

I supplied them with a OEM part number that was given by my dealer based upon my VIN.
OEM part number 5604-4214AA

And their reply this morning:


Hi Eric,

Sorry, unfortunately we do not have a cross for the part number provided.

I'm going to give them the NGK part number and see what they respond.




Got a reply.
The cross for for the upstream sensor is NTK is 234-4077 just like DaddyCat suggested.