Here, you are looking at the Aluminati Oil Cap with -12AN Breather. This version will have a -12AN thread machined into the top of the cap which can be used as a breather port for your custom catch can or AOS setup.
-Machined from billet 6061 aluminum materials
-Black anodized for a long-lasting finish
-Comes with new OEM gasket
-Made in the USA