Firstly, the product packaging of the original water pump or supporting manufacturer is generally relatively standardized, with clear and formal handwriting, and detailed product names, specifications and models, registered trademarks, factory names, addresses, and phone numbers; The packaging of counterfeit accessories is generally rough, and the factory address and name are not clearly printed.

Secondly, qualified water pumps have a smooth surface and good workmanship. The more important the spare parts are, the higher the processing accuracy is, and the stricter the packaging is for rust prevention and anti-corrosion. If rust spots, rubber cracking, loss of elasticity, or exposed machining patterns are found on the surface of the journal during purchase, it should not be an original accessory.

Thirdly, the appearance of inferior water pumps is sometimes good. However, due to poor manufacturing technology, it is easy to be damaged. When purchasing, one can only observe the hidden parts such as edges and corners of the accessories to see the quality of their craftsmanship.

Fourthly, some water pumps are refurbished with discarded parts, and when the paint on the surface of the parts is removed, the old paint can be found. It is best not to use such pumps.

Fifth, when purchasing spare parts and installing them on the car, it depends on whether they can be matched and whether their accessories are well matched. Generally, original parts can be well allocated to the vehicle, while low-quality parts are difficult to match well due to poor craftsmanship and large processing errors.

Sixth, in order to ensure that the assembly relationship of the water pump meets the technical requirements, some formal parts are engraved with assembly marks on the surface to ensure the correct installation of the accessories. If there are no marks or the marks are unclear and cannot be recognized, it is not a qualified accessory.

Seventh, a legitimate water pump assembly and components must be in good condition to ensure smooth installation and normal operation. Some small parts on the assembly are missing, which can easily cause difficulties when starting the vehicle. Such parts may be counterfeit parts.

Eighth, some important accessories, especially assemblies, usually come with instructions and certificates of conformity when leaving the factory to guide users in installation, use, and maintenance. Fake assemblies generally do not have detailed installation instructions to guide these.