This is a A-400-7651 Inner Tube PN: 400-7651Main Description As Following : A-400-7651 Inner Tube PN: 400-7651 Found in Section & Models : Driveline > Driveline Components, Walterscheid P SERIES: P400, Walterscheid P SERIES: P500, Walterscheid W Series: 2400, Walterscheid W Series: 2500, Walterscheid W Series: 2600, Driveline > Shafting & Tubing, Walterscheid P SERIES: P400, Walterscheid P SERIES: P500, Walterscheid W Series: 2400, Walterscheid W Series: 2500, Walterscheid W Series: 2600 Associated Items : New Also This is An Aftermarket Product And : Weasler alternative to original part. Dim A (1): 51mm Bore / 6mm Wall Length: 59 1/16" - 1500 mm