Stupid question,.. But I got a gasket from O'riellys, it's a blue gasket with a metal core part http://www.oreillyauto.com/site/c/d...+gasket&forcedVehicle=true&pt=02296&ppt=C0026 I'm installing this tonight, and if I need to run out and get some RTV before I start this I would like to know before I get it all back together....