POTAUTO MAP 3008C (CF10103) Activated Carbon Car Cabin Air Filter Replacement for BMW, 500 Series, 600 Series, M Series Spec.: 12.6" (Length), 6.73" (Width), 1.18" (Height); Four-layer fabric (One Carbon Layer) ; Installation instructions included. Applications Where Used: BMW (525i 07-04, 525xi 07-06, 528i 11-08, 528i xDriver 10-09, 528xi 2008, 530i 07-04, 530xi 07-06, 535i 10-08, 535i GT 2010, 535i xDrive 10-09, 535xi 2008, 545i 05-04, 550i 10-06, 645ci 05-04, 650i 10-06, M5 10-06, M6 10-06) (See Amazon Part Finder for fitments to your cars) Benefits: (1) Reducing at least 98% of these contaminants (Dust, Pollen, Exhaust Gas, Particles of 5-100 microns...etc.) from the air passing through the filter & entering the interior of the vehicle. (2) Activated carbon cabin filter provide extra protection by absorbingthe airborne agents & allergens. (3) Increase safety through reduced deposits in the fan or on the windscreen, and protect HVAC air conditioning performance. Competitor Cross Reference Part Numbers (for reference only, please check size): BMW 64 31 6 935 823, 64 31 9 171 858, 64 31 6 913 506, CARQUEST 90129C, CHAMP CAF1842C, LUBER-FINER CAF1842C, MOBIL CAF1842C, PUROLATOR C26078, AIR QUALITEE AQ1055C, ATP CF-166 RA-91, Beck/ Arnley 042-2035, Champ CAF1721, G.K INDUSTRIES CF1100, MANN FILTER CUK3139-2, CUK3139, MICRON-AIR BM04130C, Purolator C35509, Ecogard XC26078CTYC 800028C2, FRAM CF10103 *** Change filter every 12 months or 12, 000-15, 000 miles. Check & replace filter if peculiar smell / odors emit from the cabin air outlets, or if the vehicle HVAC system operates with poor performance, or humming, or weak air volume. ***LEGAL DISCLAIMER: The Brand name & Model # (if listed) are for cross reference only. All Brands, Trademarks & Model Numbers remain the property of their respective owners.