Does anyone know the Denso part # for the primary (front) O2 sensor? I searched but couldn't find the answer. I look online and there's different part#s and prices, but they both say front so I'm confused. Mine went south when I did the header replacement and I have a check engine light code for the O2. Thanks for the help.

 

I would stick with oem on that part. Many have had issues with aftermarket O2s.

Also when buying aftermarket ones watch out cause some want you to run them in pairs (meaning to buy 2)

 

Denso is the OEM I thought. Just don't want to pay $177 at the stealer. I think the part # is 234-4727. I knew you'd be the one to answer this Thanks!

 

110 here

http://www.acuraautomotiveparts.org/...catdisplay.jsp

 

i have one bosch from napa and the cat one is oem and no problems so far

 

Hopefully they made them better. Pure Adrenaline went thru like 3 or 4 of them

 

Well, I ended up buying a Denso 234-4727 from carpart.com for $77.28. Supposedly it's the same as Acura without the Acura part # and upcharge. Thanks for the help as always!