4.3GXi-P; 4.3GXi-Q Cooling System Circulation Pump 4.3GXi-P, 4.3GXi-Q Parts on group Circulation Pump: Pos. Part No Qty Parts name Comments 1. 21124846 [1] Pump 2. 3852477 [2] Gasket 3. 3856147 [2] Stud 4. 3853403 [1] Nut retainer 5. 3856137 [1] Bolt 6. 3856136 [1] Bolt 7. 3860083 [1] Pulley 8. 3863054 [4] Flange screw 9. 3863438 [1] Hose clamp 10. Thermostat housing or heat exchanger Parts catalog : Seawater System, Gimbal to Seawater Pump 4.3GXi-P, 4.3GXi-Q Seawater System, Thermostat Housing to Exhaust 4.3GXi-P, 4.3GXi-Q Seawater Pump Parts 4.3GXi-P, 4.3GXi-Q Hot Water Outlet 4.3GXi-P, 4.3GXi-Q