Air filter products with plastic shell, more commonly seen in Japanese and Korean models, so in the maintenance of these vehicles, more should be taken precautions. At the same time, when installing the air filter with plastic shell, you must carefully read the product technical description and installation instructions. If conditions permit, you should check the after-sales technical information and installation process provided by the vehicle manufacturer.

After taking out the new air filter, we should carefully observe the structural difference between the air filter itself and the positive and negative sides of the plastic shell to confirm the installation direction. When you are not sure of the installation direction of the new filter element, do not rush to remove the old air filter first. Take a picture and then dismantle it.