Searching for the perfect blend of function and elegance? Discover 2x For Mazda 6 2.5L 2009 2010 2011 2012 2013 4 & 5 Wire Air Fuel Ratio Oxygen O2 Sensor 02 Upstream Downstream 234-4279 234-5033 today at the best price. Recognized for its superior performance and modern, functional design. Discover top-rated finds on Posegg.com — buy online and save today.