{"product_id":"bosch-c3900ws-cabin-air-filter","title":"Bosch C3900WS Cabin Air Filter","description":"\u003ch2\u003eBosch Cabin Filter, Activated Carbon C3900WS\u003c\/h2\u003e\u003cp\u003eBosch C3900WS is an activated carbon cabin air filter built for BMW applications that need cleaner in-cabin air and odor control. Its 5-layer design adds a carbon layer to capture exhaust-related gases and a protective cover layer for added filtration support.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eActivated charcoal filter media for cabin air filtration\u003c\/li\u003e\n\u003cli\u003e5-layer construction with an added carbon layer for odor reduction\u003c\/li\u003e\n\u003cli\u003eHelps absorb ozone, nitrogen oxide, sulfur dioxide, and hydrocarbons\u003c\/li\u003e\n\u003cli\u003eOEM standard part for direct replacement service\u003c\/li\u003e\n\u003cli\u003eOne filter per vehicle application\u003c\/li\u003e\n\u003cli\u003eRecommended replacement interval: 12,000 miles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eThe Bosch Cabin Filter, Activated Carbon line is engineered for drivers who want a replacement cabin air filter with multi-layer protection and odor-focused filtration. Part number C3900WS uses activated charcoal media and foam construction to help maintain cleaner airflow through the HVAC system. This Bosch C3900WS cabin air filter is a direct-fit service part for select BMW 5 Series, 6 Series, M5, and M6 models, including 2004-2010 BMW 525i, 530i, 545i, 528i, 535i, 550i, 650i, M5, and M6 applications listed below.\u003c\/p\u003e\u003cp\u003eThis part cross-references BMW 64319171858 for the same application.\u003c\/p\u003e\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 2008-2010 BMW 528i, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2009-2010 BMW 528i xDrive, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2008-2010 BMW 535i, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2009-2010 BMW 535i xDrive, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2006-2010 BMW 550i, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2006-2010 BMW 650i, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2006-2010 BMW M5, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2006-2010 BMW M6, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2008 BMW 528xi, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2008 BMW 535xi, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2004-2007 BMW 525i, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2006-2007 BMW 525xi, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2004-2007 BMW 530i, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2006-2007 BMW 530xi, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2004-2005 BMW 545i, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2004-2005 BMW 645Ci, N\/A\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Issues This Filter Addresses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUnwanted cabin odors from traffic and exhaust exposure\u003c\/li\u003e\n\u003cli\u003eReduced HVAC air cleanliness from a worn filter\u003c\/li\u003e\n\u003cli\u003eDust and airborne contaminants entering the passenger compartment\u003c\/li\u003e\n\u003cli\u003eDeclining airflow through a clogged cabin filter\u003c\/li\u003e\n\u003cli\u003eNeed for scheduled maintenance at the 12,000-mile interval\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eReplace the cabin filter at the interval recommended for your service schedule, or sooner if airflow drops or odors increase. Confirm the Bosch C3900WS application against your BMW model and year before ordering, since fitment varies by chassis and engine configuration. For best results, install the filter in the HVAC service location specified for the vehicle and verify airflow direction if marked on the part.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eBosch cabin filters are built as OEM standard replacement parts for routine HVAC service. The activated carbon design and multi-layer construction support consistent filtration performance for compatible BMW applications.\u003c\/p\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":52413539516597,"sku":"BBHK-C3900WS","price":26.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/BS_C3900WS_Fro.jpg?v=1777793385","url":"https:\/\/www.partcatalog.com\/products\/bosch-c3900ws-cabin-air-filter","provider":"PartCatalog","version":"1.0","type":"link"}