This is a A-B1XC92YC Spark Plug, Champion (4 PK) PN: B1XC92YCMain Description As Following : A-B1XC92YC Spark Plug, Champion (4 PK) P.N: B1XC92YC Replaces: Champion: XC92YC Crossed From: MIU11020 JOHN DEERE , XC92YC CHAMPION Found in Section & Models : Sunbelt - Electrical > Spark Plugs, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : Replaces: Champion: XC92YC