First, the product packaging of raw water pumps or supporting manufacturers is generally standardized, with clear and formal handwriting and detailed product name, specification, registered trademark, factory name, address and telephone number; The packaging of counterfeit parts is generally rough, and the address and name of the factory are not clearly printed.

Second, the qualified water pump has smooth surface and good workmanship. The more important the parts, the higher the machining accuracy, and the stricter the rust and corrosion protection of the packaging. If the parts are found to have rust spots or rubber parts are cracked and lose elasticity, or there are exposed processing lines on the surface of the journal, there is a high probability that they are not original fittings.

Third, inferior pumps sometimes look good. However, due to poor manufacturing technology, it is easy to be damaged. When buying, you only need to observe the hidden parts such as the edges and corners of the accessories, so you can see the quality of the accessories.

Fourthly, some pumps are refurbished with waste fittings. At this time, as long as the surface paint of the accessories is removed, the old paint can be found. It is best not to use this kind of pump.

When the purchased spare parts are loaded on the car, it depends on whether they can be well matched with other spare parts. Generally, the original spare parts can be easily allocated to the car, while the inferior parts will be difficult to match each other because of poor workmanship and large processing errors.

Six, in order to ensure that the assembly relationship of water pump meets the technical requirements, some conventional parts will be engraved with assembly marks to ensure the correct installation of accessories. If there is no mark or the mark is vague, it is not a qualified accessory. Seven, regular assembly of water pumps, components must be in good condition, to ensure the smooth and normal operation of loading, some small parts on the assembly are missing, which is easy to cause initial installation difficulties, and such accessories may be fake.

Eight, some important accessories, especially the assembly, generally have instructions and certificates when they leave the factory to guide users in installation, use and maintenance. Pretending to match generally has no detailed instructions.