Engine Codes: N57D30A, N57D30B, M57D30 (306D3). OEM Part Number: 11517823428 11518512269 11518512497 11518516435. Engine Codes: N57D30A N57D30B M57D30 (306D3). Piston Rings (182). Water pump with seal designed for BMW 3.0d engines, including N57 & M57.
