Johnson flexible impeller raw water pump for John Deere engines: PowerTech 4.5L and PowerTech 6.8L (4045DFM70, 4045TFM75, 6068TFM75 & 6068TFM76). Replaces John Deere pumps RE503068. Johnson pump 10-24398-02 is an F7B-9 flange mounted pump with a nominal bore of 1".