The filter cartridge filters the impurities in the coolant, prevents the generation of scale, and ensures the normal operation of the engine cooling system. Water filter cartridge plays an increasingly important role in engine. The water filter cartridges can filter the impurities in the water and filter the impurities in the coolant through the high-quality filter medium water filter element to prevent the generation of scale and ensure the normal operation of the engine cooling system. Water filter element plays an increasingly important role in engine. The water filter element can filter the impurities in the water, protect the cylinder liner of the engine through high-quality filter medium, prevent scale, stress corrosion, etc., so as to prolong the service life of the engine and reduce the maintenance cost. Protect the cylinder liner of the engine, prevent scale and stress corrosion, so as to prolong the service life of the engine and reduce the maintenance cost.