How to choose car parts, how to choose the best or how to look at some product defects has become a difficult problem for car owners, and the lack of professional knowledge introduction is the source of the problem. Here, I will introduce some key points to you.
Firstly, of course, it depends on the trademark. The outer packaging of authentic automotive accessories is of good quality, with clear handwriting on the packaging box and bright overprinting colors. The packaging box and bag should be marked with the product name, specifications and models, quantity, registered trademark, factory name, address, and phone number. Some manufacturers also mark their own parts. Some important components such as automotive clutch accessories are also equipped with user manuals. Certificate of conformity and inspector seal. To guide users in proper use and maintenance. When choosing, one should carefully recognize it. To prevent buying counterfeit and inferior products.
Then it depends on the quality of the product itself and whether there is rust on the surface of the parts. Qualified surface of spare parts. It has both a certain degree of accuracy and a glossy finish. The more important the spare parts are. The precision requirements for automotive clutch accessories, brake system accessories, and other products are relatively high, and the packaging is very strict in rust prevention and anti-corrosion. So generally, there will not be rust like that, and attention should be paid to inspection when purchasing.
Check if the product joint is flat again. Car parts are being transported. During storage. Due to vibration. Bumping. Burrs often appear at the joint area. Indentation. Damaged or cracked. Affects the use of parts. Pay attention to inspection when purchasing.
Also, check if the rotating components are flexible. When purchasing rotating component assemblies such as oil pumps, rotate the pump shaft by hand to feel flexible and free from jamming. When purchasing rolling bearings, support the inner ring of the bearing with one hand and rotate the outer ring with the other hand. The outer ring should be able to rotate quickly and freely, and then gradually stop rotating. If the rotating parts do not rotate properly, it indicates internal corrosion or deformation, and do not purchase.
The above few suggestions are hoped to be helpful to the majority of car enthusiasts. Of course, there are some other points of note that have not been mentioned. I hope car enthusiasts who are familiar with this issue can supplement them.