Air filter replacement, replacement of air filter oil separator gasket ford focus 3

Replacing the air filter Ford Focus 3. And replacing the oil separator gasket (foam rubber) of the air filter Ford Focus 3 Catalog number of the original air filter Ford: 1708877 (900 rubles) Catalog number of the analog of the air filter installed by Hengst: E1010L (480 rubles). Catalog number of the oil separator gasket of the air filter (only the original, no analogs) Ford: 1694449 (150 rubles)