This could be one of the first modifications you make to your RS so here is a quick guide how to change your air filter:
![Guide how to fit an air filter Focus RS](https://mk3focusrs.club/wp-content/uploads/forum_uploads/1435/ks2l8pxyx00kzjumgbqzes3uiknuafuk.jpg)
- Remove the screws that secure the air filter housing cover.
- Remove the air filter housing cover.
- Remove the air filter element from the air filter housing.
- Wipe any dirt or debris from the air filter housing and cover to make sure no dirt gets in the engine and that you have a good seal.
- Install a new air filter element.
- Note: Make sure you align the locating tab on the air filter element with the fork in the air filter housing.
- Install the air filter housing cover.
- Install the screws to secure the air filter housing cover to the air filter housing.