HIFROM Replacement Air Filter Part # 13717521033 (C 30 139) for E60 E61 E85 E86 525i 525xi 528i 528xi 530i 530xi Z4 1. HIGH QUALITY & SUPPORT: from Professional Factory; Professional technical support; if you unsatisfy, can return no risk; High performance air filter from HIFROM 2. FUNCTION: A clean air filter improves air flow and prevents dirt and dust from entering the engine 3. Replace part # : 13717521033 , 13717521038 4. COMPATIBILITY: Compatible with E60 E61 E85 E86 series, If you are not sure if this is the correct item for your car please send us all your numbers and we will gladly check for you. 5. DIMENSION: Length : 294.5 mm; Width : 231 mm; Height : 46 mm