The engine air filter element in a first generation (2010, 2011, 2012 & 2013) Kia Forte with the Theta II 2.0 liter inline four cylinder motor should be cleaned at every oil change and replaced when overly soiled. Check out my DIY tutorial for the procedure (including the replacement part numbers) by clicking on the text link or thumbnail image below.
2010-2013 Kia Forte 2.0L I4 Engine Air Filter Replacement Guide
