Want to try to tackle replacing this part myself. Can anyone help identify the part number? What's the level of effort can it be done through the wheel?

It appears to be this part but not 100% sure:

Acura Part No.: 33116-S84-A11
Bulb, Headlight (HB4) (12V 51W) (Stanley)

https://www.acurapartswarehouse.com/...6-s84-a11.html

 

uhh yeah, you got the part number and the wrong generation of TL....
not sure on what you need....do you need the bi-xenon bulb or the side/turn signal bulb????

i'm assuming you need the headlight bixenon bulb...which the Philips D2S 85122 is the stock bulb..

 

Based on the picture two bulbs fit in there. I'm guessing DS2 as well. But what do you mean wrong generation of TL? The vin number used to search the part and it is for 2005.

Acura Part No.: 33116-SL0-003
Bulb, Headlight (D2S) (Hid) (Stanley)

 

Here's the correct link:
https://www.acuraoemparts.com/auto-p...headlight-scat

It says 2004 but 2005 is identical.

The light that is off on the picture (closest to middle of the car) is the HB4 bulb you linked.
The light that is on in the picture is D2S.

Assuming you want to change the D2S bulb, people have done it through the fender but it's pretty tight and you risk touching the bulb against something dirty. Most people will remove the bumper and the headlight to change the bulb - easier than it sounds assuming you don't run into any corrosion problems on this 10+ year old car.

 

^the first link you linked is for acura's before 2005.....so, it showed wrong part numbers...because you dont have that generation of TL....

the OEM bulb is the D2S Philips 85122 for the 2004-2008 TL.

 

drop the bumper and you will find four PITA bolts that hold the ballast bracket, whoever design these bolts should get taken to a dark room and get beaten.


I had my fun.

 

Removing the bumper is more intimidating that what is actually required. Your first time, it may take you 30 minutes to take off, but it's really not hat bad. You can DIY, just give yourself enough time.