VTT BMW S55/N55 EWG Cast Aluminum Valve CoverDescription VTT is proud to announce our S55 N55 EWG Cast Aluminum Valve cover. We created these for the N S55 owner who wants to save a little over our billet option but still wants to add a great look to their engine bay while also getting rid of the stock plastic valve cover which can crack with higher mileage. These kits also get rid of the problematic factory PCV system, and allow you to run your PCV any way you choose, we do recommend a catch