This part is listed by BMW as BMW part number 11531272866 (11-53-1-272-866) and is described as Genuine BMW Distribution Piece (Tee) for Coolant Hoses on E28 533i, 535i, M5 (1983-1988), E24 633CSi, 635CSi, M6 (1983-1989), and E23 733i, 735i (1983-1987).
BMW Fitments:
5 Series
E28 (82-88) > 533i
E28 (82-88) > 535i
E28 (82-88) > M5 (87-88)
6 Series
E24 (77-89) > 633CSi
E24 (77-89) > 635CSi
E24 (77-89) > M6
7 Series
E23 (77-87) > 733i
E23 (77-87) > 735i
