The AEM 28-30005 is a reusable panel filter sized for the 1.8-liter gasoline four-cylinder in AUDI A3 L4-1.8L F/I, 2013-2016 models. Its non-woven synthetic media is oil-free, so after cleaning there is no re-oiling step, and the outside dimensions are 11.406 in (290 mm) by 7 in (178 mm), with a height of 1.5 in (38 mm). Cheap paper replacements are disposable, but this element is meant to be washed and reused. The manufacturer says it is proudly manufactured in the USA, and it carries a limited lifetime warranty. Its marketed advantages are sharper throttle response and steady airflow in dusty, demanding conditions, not a quantified horsepower number. Search terms this part answers include 2013-2016 Audi A3 1.8L reusable panel air filter, washable DryFlow intake filter, and oil-free performance air filter.
The manufacturer lists the 2013-2016 Audi A3 with the 1.8L engine as the application. Published fitment varies between catalogs, so check against your VIN or confirm with the manufacturer before ordering.
The manufacturer's procedure is to remove the filter, tap off loose debris, spray cleaner on both sides and let it soak for about 10 minutes, rinse from the clean side outward with cool or warm (not hot) water, then air dry before reinstalling. The manufacturer recommends its own filter cleaner or a mild multi-purpose cleaner for panel filters, and says not to apply oil.
The manufacturer lists a limited lifetime warranty on this filter.
This is a filter swap rather than a tuning job, but the manufacturer's install sheet for this specific part was not located during research, so review the manufacturer's instructions before opening the airbox. The cleaning routine is the most useful DIY detail: lightly tap off all loose dirt and debris before applying cleaner, rinse until the water runs clear, and re-install the filter once it is dry or just slightly damp. Owners on user forums commonly note that the filter should be fully dry before it goes back in the housing. Confirm your airbox access method for the 1.8L engine before starting.
