9/11/23 have 4 black and one as machined.

Run a catch can without having to modify your valve cover.

This b00st3d oil cap is the simplest way to add a single AN fitting to your 4G63 valve cover without drilling or welding. Pair this with a proper catch can and lines for a complete, no-bs installation!

-Billet 6061 aluminum
-CNC Machined
-Stainless Hardware
-Aluminum Splash Shield

You will reuse your existing gasket and spring lock.

Assembly instructions are below.