2014-2018 Mazda 3 Skyactiv Engine and Performance
Hello!
I'm planning to replace the stock filter after approx. 21,000km, read many threads, but did not find an accurate answer, which one is better recommended, AEM or K&N engine filter?
AEM:
https://www.aemintakes.com/search/product.aspx?prod=28-20480&vw=all
K&N...