A6540940004 Air Filter fit For CLS C257 E-CLASS W213 S-CLASS W222 V222 X222 2017-. OEM NO. : A6540940004. Protects the air conditioner: The filter protects your car's air，conditioning system from dust and dirt, helping it to stay cleaner. ‌Enhanced Performance‌: Pair with a new activated carbon cabin air filter to optimize airflow and support the efficient operation of your vehicle’s HVAC system. This contributes to improved vehicle performance and reduced environmental impact., Manufacturer: DGOINGPI