How to choose a spark plug? ——The size should be the same

A little bit of common sense will know that whether you want to replace the spark plug or other parts, you need to choose parts with the same size. In addition, you need to choose the length and diameter to match. In fact, you don’t need to say how to judge. If you buy the wrong model, you can’t install it. Even if it can be installed, the slight difference in the length and time will have an adverse effect on the performance. When buying, try to choose the corresponding model on the spark plug. The model mark has a string of characters on the spark plug. This string of characters The second letter in represents the size of the spark plug, which also contains the diameter and length of the thread.