BBMW e31 e32 e38 Water Pump O-Ring 750 850 ReviewbP PP BMW e31 e32 e38 Water Pump O-Ring 750 850 PO-Ring for Water Pump 6.0 X 2.5 mmPBrand NEW part with full 1 year warranty.PBMW part# 11 53 7 501 776, check fit below.PGenuine BMW part, recently made: not been lying around.