HTG Car Cabin Air Filter Activated Carbon Charcoal type OEM Replacement 64 31 9 071 935 for 1999 BMW 323i 323is 328i 328is Activated Carbon filter, perfect for trapping carbon-based impurities Remove certain impurities, purify incar air and protect your health Direct fit, OEM replacement Part Number: 64 31 9 071 935 (please check before ordering) Ideal replacement for your old one!