12310-Z8A-000, 12310-Z0J-000 Genuine Honda OEM Head Valve Cover & Gray RTV for GC135, GC160, GC190, GCV135, GCV160, GCV190, GS160, GS190 Genuine Honda OEM head valve cover 12310-Z8A-000 with gray RTV silicone gasket maker 4 bolt type; supersedes 12311-ZL8-000, 12311-ZL8-D00, and 12310-Z0J-000 Fits Honda engines GC135, GC160, GC160A, GC160LA, GC160LE, GC190A, and GC190LA Fits Honda engines GCV135, GCV135A, GCV160, GCV160A, GCV160LA, GCV160LE, GCV190A, and GCV190LA Fits Honda engines GS160LA and GS190LA