The K&N Drop-In Air Filter for Audi RS6 (V8 4.2L, 2003–2004) is a washable, reusable high-flow replacement designed to improve airflow and help increase horsepower while protecting the engine. This application requires two filters and fits as drop-in replacements in the factory air boxes. Backed by K&N's No-Hassle Lifetime Limited Warranty, layered, oiled cotton media captures contaminants while promoting airflow.
K&N Replacement Air Filter AUDI RS6, 4.2L-V8 (TWIN TURBO); 2002-2003 (2 FILTERS REQUIRED)