4.3GXi-P; 4.3GXi-Q Cooling System Seawater Pump Parts 4.3GXi-P, 4.3GXi-Q Parts on group Seawater Pump Parts: Pos. Part No Qty Parts name Comments 1. 21212799 [1] Pump 2. 21213664 [1] Impeller kit replaces 3842786 for gas engines 3. 21212794 [1] Impeller 4. 3858938 [1] O-ring 5. Not sold separately 6. 21951332 [1] Screw kit 7. Not sold separately 8. Not sold separately 9. 827247 [1] Sealing ring Parts catalog : Seawater System, Thermostat Housing to Exhaust 4.3GXi-P, 4.3GXi-Q Seawater System, Gimbal to Seawater Pump 4.3GXi-P, 4.3GXi-Q Circulation Pump 4.3GXi-P, 4.3GXi-Q Hot Water Outlet 4.3GXi-P, 4.3GXi-Q