Mann-Filter C 30 013 premium engine air filter insert for BMW X3 F25 sDrive 20i (184 hp / 135 kW N20 B20 petrol engine). Large rectangular panel-style element measuring 313 mm length × 258 mm width × 38 mm height. From Mann+Hummel's C-series of original-equipment air filters, engineered to protect the turbocharger and engine internals from airborne particles while maintaining optimal airflow for engine performance and fuel economy. Mann-Filter is the German OE supplier to BMW — C 30 013 delivers factory-level filtration quality.