2X Up+Downstream Oxygen O2 Sensor For VW Touareg Audi A4 R8 234-4829 234-5019. 1 234-4829 Downstream. For 2010-2012, 2014-2015, 2017 Audi R8 5.2L. For 2011-2017 Volkswagen Touareg 3.6L. For 2009 Audi A4 2.0L(Base, Luxury, Sport, Trendy, Trendy Plus).
