This is a A-47439D Magneto Coil PN: 47439DMain Description As Following : A-47439D Magneto Coil P.N: 47439D Services H-4 & F-4 Magneto Replaces: A-21M1809 IH , Crossed From: RW104 , Found in Section & Models : Ignition & Electrical Parts > Ignition & Related Parts, Case-IH TRACTOR: SEVERAL Associated Items : New Also A-MNL18344 And : Services H-4 & F-4 Magneto