Not sure which 2009 Scion xB Air Filters - Custom Fit is right for you? We have over 14143 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"i instantly noticed a difference in the amount of power my engine felt like exerting!" —Gina S from Conifer, CO bought a K&N Air Filters for a 2009 Scion xB, 2.4L 4-cyl. engine.
"Just like all other K&N air filters I have had this one works just the same. Increased airflow over the stock air filter, starting to see the gain in mpg and the truck has a more aggressive tone. In the breakin period of the truck still so haven't stomped on it to see if there are any noticeable power gains but I'm sure the filter has added a couple ponies as well. First order from AutoAnything, definitely will not be the last." —Mark M from Saint Charles, MO bought a K&N Air Filters for a 2009 Scion xB, 4.6L V8.