AEM DryFlow Air Filter for Focus RS (AE-20993) Gates The problem can sometimes be

The problem can sometimes be induced by thicker oil weights

Suitable for mild bolt-on mods

A little research showed that this was a common issue

This piece fits to stock locations and and includes all necessary hardware and gaskets for a clean and simple install

AEM DryFlow Air Filter for Focus RS (AE-20993) Gates The problem can sometimes beThe AE 20993 AEM Dryflow air filter for the Focus RS. This is a direct replacement for the stock filter element and requires no modifications. Vehicle Fitment: 2016 2018 Ford Focus RS More Info: AEM Dryflow Air Filters are washable synthetic air filters designed for an optimum combination of air flow, filtration, and performance. AEM Dryflow filters use an innovative high performance oil free filtration material that allows easy cleaning, durable