This is a A-W125321 Inboard Yoke, used w/ S5 Outer Profile Tubing PN: W125321Main Description As Following : A-W125321 Inboard Yoke, used w/ S5 Outer Profile Tubing P.N: W125321 Replaces: Walterscheid Part No: 125321Size: 61mm Found in Section & Models : Driveline > Driveline Components, Walterscheid P SERIES: P500, Walterscheid PWE SERIES: P580, Driveline > Yokes, Walterscheid P SERIES: P500, Walterscheid PWE SERIES: P580 Associated Items : New Also This is An Aftermarket Product And : Replaces: Walterscheid Part No: 125321 Size: 61mm