Cardone 58231 Remanufactured Water Pump Every unit is supplied with a premium quality mounting gasket for a guaranteed, leak-proof seal on all mounting surfaces 100% computer tested for maximum performance and durability Supplied with new O.E.M. supplied unitized seals, ensuring long-lasting, trouble-free performance Original casting specifications are strictly followed to ensure proper fit for easy installation and proper water flow and maximum cooling Bearings made of heat-treated carbon or carburized steel are sealed and lubricated to ensure smooth performance throughout units life A cooling system maintenance check should be performed at least once every two years. Consult vehicles service manual for specific guidelines on cooling system. A hydrometer can be used to measure specific gravity of coolant. A refractometer can be used to determine coolant concentration and freeze point. Check coolant level. Adjust level if necessary with correct coolant mixture. The engine overheating could be due to components other than the water pump. The following steps should be taken before checking the pump. Flush the system. Check hoses, clamps and seals. Check radiator cap and thermostat. Check for proper and sufficient coolant. Check for cracks, warpage and other damage.