Description:

Replacement Upstream Oxygen Sensor - Sometimes referred to as O2 or Lambda Sensor measures the amount or proportion of oxygen mixed in the fuel of your vehicle which is essential in the proper operation of your catalytic converter. The vehicle then determines whether it is necessary to adjust for it to perform properly. Compatible Replacement for Audi, Porsche and Volkswagen Vehicles - 2006-2013 A3 Base 2009-2013 A3 Quattro Base 2010-2013 A3 TDI 2008-2009 TT Base 2009-2015 TT Quattro Base 2006-2008 911 Carrera 2006-2008 911 Carrera 4 2006-2008 911 Carrera 4S 2014 Volkswagen CC 4 Motion 2012,2014-2015 CC Executive 2015 CC Executive 4 Motion and more. See below for the full vehicle list.. OEM Fit, Quality, Finish - This replacement 02 Oxygen Sensor is a direct replacement for the Oxygen Sensor part# 234-5107 and will fit, work and function like the original part or even better. The oxygen sensor maintains engine performance and fuel efficiency by reducing harmful emissions which helps extend the life of the catalytic converter..