So I’m about to do my valve cover gaskets for the first time (200k mi) and saw the video mentioned replacing the plenum gasket (which to my understanding are the 2 identical plates in the middle).
I’m wondering why there are 2 of them, what the top gasket is for, and what the bottom 6 items are for. I can’t find a video or anything online such as a diagram or forum post.
Thanks so much, and Merry Christmas

 

It's an aftermarket kit so, my best guess is, they sometimes include multiples to account for 'model' variations (other than the TL), if any.
With that said, you'll likely only need one Inlet Manifold Gasket (purple) and one of the throttle body gaskets (yellow).
The Intake Manifold Cover Gasket Upper (red) goes under the #3 inlet manifold cover as shown.
Not sure where to apply the two o-rings at the bottom?

 

Wow! Thank you for the super quick detailed reply! That seems reasonable… The video only showed replacing the inlet manifold cover gasket but included a link to a full set I’ll have to find what the o-rings are for…
What is that website where you got that diagram?!

 

Save it to favorites & do all preliminary part # research there, then shop the web for best price.
Intake Manifold - 2008 Acura TL 4 Door BASE KA 5AT

 

Popping in to say thanks!!! Very appreciated