This is a A-921-5170 Bearings, Guard PN: 921-5170Main Description As Following : A-921-5170 Bearings, Guard PN: 921-5170 Found in Section & Models : Driveline > Driveline Components, Weasler Domestic: W SERIES, Driveline > Shielding, Weasler Domestic: W SERIES Associated Items : New Also This is An Aftermarket Product And : Nylon Guard Bearing Kit, for W series. Original Weasler part.