Air Filter - Porsche recommends checking the air filter regularly, and replacing them every 40,000 miles. Make sure you're not choking your engine for air! Chose the standard filter (recommended), or optional "thick" filter for use in dusty / sandy regions outside USA.
Note: This comes with TWO air filters which are required for the Cayenne S & Cayenne Turbo (2011-2018). Also compatible with European/Asian Cayenne S Diesel models.