Complete Acura Part Diagrams + Part Numbers (Order Online Too)
 

I found this website useful to order OEM parts. It has illustrated diagrams with part numbers for the whole vehicle as well as other Acuras.

acuraautomotiveparts dot org

I was looking for some parts but didn't see this posted elsewhere so I thought I'd share my findings :)

sweet, thank you. I guess Acura doesn't sell the black housing for the headlights separately.

No I think you have to order the whole headlight assembly. The previous owner painted the housing black so I was stoked! :)

You can DIY by removing the headlights and sticking them in the oven for until the glue separates. Then disassemble and paint the housing, and reassemble. I did that for the JDM 1-piece headlights on my previous Acura Legend.

I guess that's the most cost effective way is DIY.