Water Pump 78 to 86 Porsche Factory New - w/Gasket - Plastic (Composit) Impeller. #15 on the PET Drawing Only the Porsche original water pumps come with the plastic impeller. Metal impellers can come loose on the shaft and have been known to mill a hole into the front of the block. Each water pump comes with a Porsche gasket and a set of new water pump bolts.
