I have been told to ONLY use Acura parts on my 00 RL 3.5L but it needs all 3 oxygen sensor and the prices I got online are $242, $208 and $170 from acurapartsoem.com. While these are discounted off of the retail of 323,228 and 278 I was wondering are there any aftermarket 02 sensors that are decent in quality that someone has installed/used with good results? The originals lasted 13 years but I don't plan on keeping it that many more years.

Thanks

 

I have all aftermarket Denso O2 sensors from advanceautoparts for over 2 years without any problem. The driver's side O2 sensor will be a little longer than the right, thus the different part number but the shorter one will fit both sides. The downstream one close to the cat is the most expensive. Here are some links to save you some money if you don't plan to get OEM ones:

This one will fit both front driver and passenger side.
http://shop.advanceautoparts.com/web...16465|L3*16466

But if you must have the correct part, it's this one for the driver's side:
http://shop.advanceautoparts.com/web...16465|L3*16466

And this is for the downstream one:
http://shop.advanceautoparts.com/web...16465|L3*16466

When checking out, buy these as all 3 separate orders and use these promo codes to save you extra money: ES123 for the front ones and HUGE50 for the rear sensor (add like something cheap to add up to $175 or higher to use this code). Good luck!

 

Great I was hoping I didn't have to spend all that $$$. I will insist the shop uses them or I will pick another shop. I also need the Idle Air Control (or Electronic Air Control Valve) and the Fast Idle Solenoid do you recommend aftermarket for those too?

 

I had Beck/Arnely(spelling) O2 at the CAT, is working perfectly. I have a question, how do you remove the two stubborn O2 on both side of the engine. I've tried to remove but no luck. I tried to spray PB blaster and let it soaked for 4hrs and the O2 did not bother to come off. Any idea?

 

If you can find aftermarket parts for it, I say go for it. I also replaced my EGR valve with one from advanceauto and have been trouble free. OEM is darn too expensive for these tiny electrical parts.


I soaked them with PB blaster for several hours and used a big breaker bar to get them loose.

 

I did a search for Denso and different car forums said they are actually the OEM manufacturer for several makes (unsure of Acura). I checked their own site and was able to read about their qualities and most forums recommend them over Bosch which I thought (assumed) were better. They say the coating on their tips allow them to last longer under extreme exhaust environments. I was going to order them as you stated through Advance but the shop manager wasn't in today so there isn't a rush so I ordered them from Amazon which was the cheapest I found online ($61,$36,85) total including next day shipping (@200) is cheaper than one of the Acura O2 sensor!!! I could not fathom why Acura is willing to charge $323 for a oxygen sensor???

Silver 3.5 I give you my thanks, in my hasted and desperation I almost was willing to shell out $900 big ones for some 02 sensors to get it back on the road but I am glad I checked here. As a mentor once told me "It is better to put your money in your own pocket rather than someone else's"(or some fat greedy corp).