This is a A-570-209 HEATER CONTROL VALVE PN: 570-209Main Description As Following : A-570-209 HEATER CONTROL VALVE P.N: 570-209 Dim A (1): Universal - Manual Type Found in Section & Models : Tractor Parts Associated Items : New Also This is An Aftermarket Product And : 5/8" Heater Hose Dim A (1): Universal - Manual Type Thread: 3/8 - 18 NPT