The K&N 33-3032 is a High-Flow replacement panel filter for the right-side airbox on the 4.2L V8 Audi RS5. Its layered, oiled cotton media is meant to improve airflow while still trapping contaminants. The filter is washable and reusable, so it replaces the paper element for the life of the car instead of being bought again at every service. The manufacturer rates it Up To 99% Efficiency, and the K&N No-Hassle Lifetime Limited Warranty backs the purchase. Buyers searching for a B8 RS5 4.2 V8 right airbox washable filter, a reusable RS5 intake filter upgrade, or a K&N 33-3032 drop-in filter are looking for this exact part. It is pre-oiled and ready to drop into your factory air box, so no modifications are needed to fit it.
Fitment is the first thing to check. The manufacturer's product page lists AUDI RS5 V8-4.2L F/I; 2013-2015 (RIGHT), while its Audi RS5 category listings show this right-side part number across earlier model years as well, so confirm your year with the manufacturer's vehicle selector before ordering. Installation is a clamp-and-lid job rather than a tuning project. Owners on user forums describe loosening the intake hoses, opening the airbox top, and seating the filter's edge over the plastic locating tab before closing the lid. The manufacturer recommends cleaning rather than replacing the filter, with cleaning needed only every 75,000 miles under normal highway driving conditions, so the 33-3032 suits owners who want a long-term intake upgrade.
The manufacturer's product page identifies the 33-3032 as the right-side filter for the 4.2L V8 RS5. The left-side filter is a separate part number, 33-3031, so check which airbox your car uses before ordering.
The manufacturer's product page lists 2013 to 2015 RS5 models, but its Audi RS5 category pages list this right-side part across 2010 to 2015. Details vary between manufacturer pages, so confirm your year with the manufacturer's vehicle selector.
The manufacturer states that the filter only needs cleaning about every 75,000 miles under normal highway driving conditions. Harsher or dustier conditions will call for more frequent cleaning.
The manufacturer describes this filter as a drop-in for the factory airbox that requires no modifications. Owners on user forums describe the job as a short one: remove the two intake hose clamps, twist the airbox top off, swap the filter, and make sure its bottom edge seats over the plastic locating piece before the lid goes back on. Forum users advise against doing this on a hot engine. No 33-3032-specific install sheet turned up in this research, so check the manufacturer's current documentation for torque or clip details, and make sure the lid latches fully so the airbox seals.
