Part #: 51331921506 Supersedes: 5133186198 51331839312 Vehicle Compatibility: 1975-1989 E24 628CSi, 630CS, 633CSi, 635CSi E24 M6, M635CSi Notes: This is a tested, working Front Right (Passenger) window regulator Came off a 1985 BMW 635CSi w/ 66k miles All slides move freely Minimal surface rust, but unit is solid and strong Ready to go into your E24 right away! Wear: All wear is shown in photos