This is a A-90081822 O-Ring PN: 90081822Main Description As Following : A-90081822 O-Ring P.N: 90081822 Inside Diameter: 4.012"Outside Diameter: 4.805"Thickness: 0.375" Replaces: V17871308Z EDCOR , V90081822Z EDCOR , 17871308 VICON , 604647 GEHL , Crossed From: G604647 EDCOR Found in Section & Models : Hay Tool Parts > Disc Mower Parts, Vicon MOWER, DISC: CM165 (Series 14020-14023-14034), Vicon MOWER, DISC: CM167, Vicon MOWER, DISC: CM216 (Series 14031), Vicon MOWER, DISC: CM217, Vicon MOWER, DISC: CM240 (Series 14022-14035), Vicon MOWER, DISC: CM247 Associated Items : New Also This is An Aftermarket Product And : Inside Diameter: 4.012" Outside Diameter: 4.805" Thickness: 0.375"