This is a A-W121145 Cross & Bearing Kit PN: W121145Main Description As Following : A-W121145 Cross & Bearing Kit P.N: W121145 Grease Zerk Location: CenterReplaces: Walterscheid Part No: 121145Size: (A/B) 36.0mm x (C/D) 89.0mmSnap Ring Location: External Found in Section & Models : Driveline > Cross Kits, (Miscellaneous) (UNDEFINED): 36.0x 36.0x 89.0x 89.0, Walterscheid P SERIES: P500, Driveline > Driveline Components, Walterscheid P SERIES: P500, Walterscheid PWE SERIES: P580 Associated Items : New Also This is An Aftermarket Product And : Original Walterscheid part. Grease Zerk Location: Center Replaces: Walterscheid Part No: 121145 Size: (A/B) 36.0mm x (C/D) 89.0mm Snap Ring Location: External