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This is THE BEST Drop In Filter available for your smart 450 / 451 / 453!
OEM paper filters present an elevated resistance to the passage of air and consequently a reduction in engine performance. Compared to a paper filter the BMC Air Filter permits a notably higher air flow passage, producing less than half the Pressure Drop over the paper filters. This doesn't compromise the filter's engine protection efficiency: thanks to the combination of the different oiled layers, containment of all impurities is guaranteed as far as 7 microns, while paper filters generally require total filtration of particles as small as 10 microns. So BMC air filters let more air into the engine while still protecting it better than paper ones.
More information and pricing can be found on our website
450
smart fortwo 450 Air Filter - BMC Online Store - smart car Parts and Accessories
451
smart fortwo 451 Air Filter - BMC Online Store - smart car Parts and Accessories
453
smart fortwo 453 Performance Air Filter - BMC Online Store - smart car Parts and Accessories
Let us know if you have any questions



OEM paper filters present an elevated resistance to the passage of air and consequently a reduction in engine performance. Compared to a paper filter the BMC Air Filter permits a notably higher air flow passage, producing less than half the Pressure Drop over the paper filters. This doesn't compromise the filter's engine protection efficiency: thanks to the combination of the different oiled layers, containment of all impurities is guaranteed as far as 7 microns, while paper filters generally require total filtration of particles as small as 10 microns. So BMC air filters let more air into the engine while still protecting it better than paper ones.
More information and pricing can be found on our website
450
smart fortwo 450 Air Filter - BMC Online Store - smart car Parts and Accessories
451
smart fortwo 451 Air Filter - BMC Online Store - smart car Parts and Accessories
453
smart fortwo 453 Performance Air Filter - BMC Online Store - smart car Parts and Accessories
Let us know if you have any questions