This is a A-T44804 Disc, Steel, Clutch PN: T44804Main Description As Following : A-T44804 Disc, Steel, Clutch P.N: T44804 Dim A (1): 6" O.D.Dim B (2): 45 Teeth Crossed From: 1412-6025 , Found in Section & Models : Transmission & Rear Axle > Clutch Plates: Clutch and PTO, John Deere CRAWLER: 555A (First Range Clutch), John Deere CRAWLER: 555A (Second, Third Range & Forward/Reverse Clutch), John Deere DOZER: 550A (First Range Clutch), John Deere DOZER: 550A (Second, Third Range & Forward/Reverse Clutch), John Deere DOZER: 550B (First Range Clutch), John Deere DOZER: 550B (Second, Third Range & Forward/Reverse Clutch), John Deere INDUSTRIAL/CONSTRUCTION: 550 (First Range Clutch), John Deere INDUSTRIAL/CONSTRUCTION: 550 (Second, Third Range & Forward/Reverse, John Deere INDUSTRIAL/CONSTRUCTION: 555 (First Range Clutch), John Deere INDUSTRIAL/CONSTRUCTION: 555 (Second, Third Range & Forward/Reverse, John Deere INDUSTRIAL/CONSTRUCTION: 555B (First Range Clutch), John Deere INDUSTRIAL/CONSTRUCTION: 555B (Second, Third Range & Forward/Reverse Associated Items : New Also This is An Aftermarket Product And : Outside Diameter: 6" Teeth: 45