This is BOV Mondo Vortech Raceway Pro supercharger. Came off a 2005 infiniti g35 base 3.5l coupe Rev Up pro charger Vortech v2. Works great has normal wear and scratches. Polish finish also comes with a filter from z 1 motorsports. Has 2 mounting screws and a gasket but recommended replacement but it still seals.. As is! Just upgraded mine. Sounds like a 747 jet when you drive it and a good sound if your running good boost!