Check valve body - just the body. For original Flow-style outlet poppet needs repair kit F300-K0025-0000 - or - save time with a fully assembled unit (F300-A0130-0000). For upgraded dual acting poppet outlet (2 piece poppet) needs repair kit F300-K0091-0000 - or - save time with a fully assembled upgraded check valve assembled unit (F300-A0192-0000)