K&N 06+ Civic Si Drop In Air Filter

Marsoni

M251S

$55.19

Get it in 3 business days with 1 day shipping. Friday, May 29

K&N 06+ Civic Si Drop In Air FilterSKU: 33 2343 UPC: 024844125439 K&N 33 2343 Replacement Air Filter for 2006 2011 Honda Civic Si, 2008 Mugen Si, 2007 2011 Honda Element The K&N 33 2343 is a washable reusable high flow drop in air filter with layered oiled cotton media that improves airflow and horsepower for 2006 2011 Honda Civic Si models including 2008 Mugen Si plus 2007 2011 Honda Element EX LX and SC variants. This direct factory airbox replacement installs in minutes and lasts

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Great plugs and amazing value for the money. Easy to use and tighten and the screw cover works wonderfully. Even comes with a couple extra screws in case you lose one. The sound is better than what I had and I used 14 gauge wire. Plugs were perfect, not too tight at all. I could see having to push for new posts but they are snug and didn't take too much force to put in. 10/10

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Reviewed in the United States on December 27, 2025