Replacing all 4 sensors on my 08 TL-S, buying Denso replacements and wanted to be sure I was using the right part numbers from Rockauto as I only found the numbers for the 3.2 on here. Also saw some were listed for the auto trans specifically and others manual (mine is the 6spd) so also wanted clarification on that.

Denso Upstream 234-5010
Denso Downstream 234-4351

Thank you in advance.

 

^
If you take the OEM part #'s for each of the four 3.5 TL-S 6MT O2's you want to replace #9, 10, 11 & 13
Converter - 2008 Acura TL 4 Door TYPE-S KA 6MT (acurapartswarehouse.com)


and plug them into the rockauto part number search functionality, on their website, it will bring up a list of specific sensors available, then you can pick the Denso's that are present.

 

Thanks, didn’t know that was a thing on Rockauto.

 

https://acurazine.com/forums/3g-tl-p.../#post16813055

 

Marsalis, RA can be good for some stuff?? But my #1 parts supplier is OEMacuraparts.com. Especially electrical parts. Cheers

 

^ That's great advice; however, why pay nearly double the price when you can get the same OEM O2 sensor at RA for nearly 50% off?

Acura online vendor eample:


RockAuto:


Either one is acceptable for Acura / Honda applications.

 

Great question Zeta! I have bot many AM parts that have failed. One example is the AT 3rd & 4th gear switches, that only lasted one month. After searching this site, someone suggested OEMacuraparts.com were way better. Changed dem out 3 years ago and still going strong. Yes, they were more $$, but........Cheers

 

The problem with your comparison is that the NTK & Denso O2 sensors ARE OEM from the factory offered on a retail parts vendor at half the price.
The AT 3rd & 4th gear switch comparison is OEM against non OEM aftermarket cheap $$ foreign junk that one would pick-up on amazon or the local Autozone.
It is well known that, when talking about trans. pressure switch replacement for Acura / honda, OEM is the ONLY way to go and 'do it right the first time' no matter the cost.
Aftermarket foreign AT 3rd & 4th gear switch(s), not so much.
A-110(a): DIY Guide to replacing 3rd & 4th gear pressure switch for 3G TL (2004-2006) - AcuraZine - Acura Enthusiast Community

 

Just to supplement what zeta said, when it comes to the switches, I would try to avoid buying "OEM" ones from amazon. I've *heard* their stocking system allows the same items from multiple vendors to be stored in the same bin. So you could have true OEM switches from a dealer sitting in the same bin as the "overseas special" parts, because they are technically listed as the same thing. There's no way to control what you're actually getting. I'd go straight from the dealer or from a reputable website.

And not to beat a dead horse, but I've had great success with Denso o2 sensors from rockauto.

 

Spot on.. the 3rd/4th pressure switches have many aftermarket options and all are . While I agree with OEMAcuraParts has a favorite vendor, in this specific instance, RA has the exact same part for a fraction of the price.

 

I appreciate all the tips/advice. I’ve had good experiences with RA as well. I’m typically the buy directly from Acura and OEM only kinda of guy, but yeah I was able to get all 4 (Denso) for $300 from RA which isn’t bad at all. Will be installing this upcoming week and hoping this fixes everything, since it’s gotten cold the car has started to vibrate/misfire while accelerating occasionally. If it ends up needing cats I’ll update lol not gonna be too upset if that ends up happening as RV6 HFPC’s wouldnt be a bad upgrade

 

Have put several hundred miles on the vehicle since replacing O2’s and it drives normally. However have discovered I will potentially need new CV axles as it vibrates upon acceleration around 60 MPH. Tires balanced, plugs are fine and idk what else it could be.

 

Have you noticed an increase in gas mileage?

 

I have, went from 21 to like 25-26 on average. I didn’t even realize it was impacted cuz 21 was within factory rating I believe.

 

NTK is oem. buy them from rockauto.com