This is a A-RE522543 Injector PN: RE522543Main Description As Following : A-RE522543 Injector PN: RE522543 Found in Section & Models : Engine Parts > Injectors, John Deere ENGINE: 4.5L, John Deere ENGINE: 4045 Associated Items : New Also This is An Aftermarket Product And : High Quality Afternaket Shipped from Both US and Canada