This is a A-1313797C2 Block, Knife Head - Boss PN: 1313797C2Main Description As Following : A-1313797C2 Block, Knife Head - Boss P.N: 1313797C2 Replaces: 1313797C1 Crossed From: WN-1313797C2 , , WN1313797C2 , , 1313797C1 CASE-IH Found in Section & Models : Headers/Platforms/Feeder House > Grain Head Parts, Case-IH HEAD, CUTTING PLATFORM: 1010, Case-IH HEAD, CUTTING PLATFORM: 1020 Associated Items : A-1316161C95 Also This is An Aftermarket Product And : Replaces: 1313797C1