HQRP 2-Pack Carbon A/C Cabin Air Filters for BMW 525i 2004-2007; 525xi 2006-2007 plus HQRP Coaster HQRP&reg; 2pcs Activated Carbon / Charcoal Cabin Air Filters plus HQRP&reg; Coaster; Type: Activated Carbon/Charcoal; Size: 322x168x30mm; Compatible with BMW OEM Ref.: # 64-31-9-171-858, 64-31-6-935-822, 64-31-6-935-823, 64-31-9-174-370, 64-31-9-174-371, 64-31-9-174-372; TYC # 800028C2; Purolator # C26078; FRAM # CF10103; MANN # CUK3139; ATP # CF-166; Wix # 49374; Beck/Arnley # 042-2035; PRONTO # PC6078; 200 days warranty!