No… it’s not a billet. It’s pretty plain actually. Just a brand new cover from Yamaha which has been drilled and tapped for a screw with a proper sealing washer. Get a complete drain when changing the coolant or actually drain the coolant from below the cylinders when removing the top end saving a mess of coolant when you lift off the cylinders. You could probably do this yourself, but we have it here ready to go. It’s simple and it works.