This is a direct replacement for PERRIN Performance 2002-2007 WRX & STI intake systems. It will also work on any intake system which accepts a 3.125" filter.
PERRIN Filters feature a unique two piece design allowing the user to remove the foam filter element for easy cleaning.
PERRIN foam filters are made of reticulated polyurethane foam which offers a minimal air restriction. The filter element is sprayed with a special oil that adheres to the foam making the poly matrix sticky to retain dirt. Foam filters do not block dirt, they grab it, suffering only minimal drops in air flow as they filter dirt, maintaining air flow levels when other filters would clog.
PERRIN Intake filter elements use open cell foam to capture dust and dirt. Washable and reusable, PERRIN Foam filter elements can last the life of your vehicle. Foam filter elements offer superior performance with minimal airflow restriction and amazing dust holding capacity.
