Well, here is the image on their site:
And the text:
Dress up your engine compartment with our new billet aluminum accessory covers. All of these pieces have a milled aluminum finish. They look great as is or could easily be polished to a chrome like finish with a little elbow grease. This Thermostat Housing Cap Cover installs over your existing housing cap and is secured with a set screw. These new pieces provide a quick and easy way to improve your underhood appearance for car shows or cruise nights.
Their response to my query:
No, the caps are CNC machined, not polished. The picture on our web site is very similar to your picture. If we were to polish them here, it would add a significant cost to the part, which most customers would rather handle themselves. A little polish will even up that finish quite nicely. Please let us know if you have any other questions or concerns.
True enough, it says it isn't polished, and the image does reflect that, once you know what you're seeing. I have the MAP cover, and the EGR cover, which state the same thing as regards to polish, and those are both acceptable in that regard, although they could be better; they are consistent.
I guess it's time to dig out the polish, and the clear-coat.
