51317027916 Rear Windshield Upper Moulding Seal Rubber, Compatible with BMW 5 Series E60 525i 528i 530i 535i 545i 550i M5 Rear Windshield Trim Molding. 【OEM Part Number】51317027916, 51-31-7-027-916, the windshield rubber seal is designed with precision original molding to ensure a perfect fit with the rear windshield of the car, forming an effective sealing layer that prevents rain, dust, and noise from entering the car and improves driving comfort.