Genuine BMW Z3 Roadster and Z3 based M Roadster convertible top replacement window kit.
This zip in replacement window is the perfect factory solution when the top fabric is in good shape but the window itself is cloudy or cracked.
BMW Part Number: 54318401027 (54 31 8 401 027) 54-31-8-401-027
Fits: all Z3 Roadster and Z3 based M Roadster models.