Fuel injector filters. Due to low-quality fuel, which leaves deposits in the fuel system of the car, and even has a lot of extraneous debris from the gas station, the injectors of the car can become filthy. In this case, their atomization will deteriorate, fuel will be used inefficiently and with excess. To prevent this, fuel injector filters are installed. There are 20 filters in the set. The filter element is made of nylon.