smart fortwo Performance Air Filter - 450 model - BMC
Smart Fortwo Air Filter - Best Air Filter Parts for Smart Fortwo - from $15.99+ | AutoZone.com
Bosch Standard Air Filter - 450 fortwo & 452 roadster
Remove The Airbox | Evilution
Smart Fortwo 453 Series (14-18) DNA Air Filter P-SM10S21-01 - DNA Filtering Efficiency: 98-99% - SMRT-FOR2 - DNA Filters - Product Details
Smart Fortwo Series (04-07) DNA Air Filter R-SM6000-01 - OEM Air Filter Air Flow: 140.00 CFM, DNA Air Filter Air Flow: 192.50 CFM - SMRT-FRS - DNA Filters - Product Details