The filter foam for Gas Gas 2003 motorcycles is a replacement component used in the motorcycle's air intake system. The air filter is responsible for cleaning the air that enters the engine, preventing dirt and dust particles from entering and damaging internal engine components. The filter foam is an essential piece for maintaining proper engine operation. It is specific to Gas Gas 2003 motorcycles, fits perfectly in the air intake system, and it is recommended to replace it regularly to ensure proper engine performance.Referencia: HR9110