2011 Audi A3
Oxygen Sensor

This is a BuyAutoParts Oxygen Sensor (Note: New BuyAutoParts Brand Air Fuel Ratio Sensor - Direct Fit Plug). This Oxygen Sensor is guaranteed to fit your 2011 Audi A3 . SKU number 48-03407 OZ

This is the upstream sensor that plugs into your vehicle's exhaust manifold. Your vehicle also has a downstream sensor on the exhaust pipe under the car; please verify which one your vehicle needs, or consider replacing them both for better long-term reliability! 100% direct-fit with a connector that plugs in just like OEM, backed by a one year, unlimited mileage warranty. Please enter your vehicle details on the website to confirm fitment, but this fits certain specific VW, Audi, Porsche, Ford & Lincoln models. Compatible with both California's CARB and the EPA's Federal emissions. This is the upstream sensor that plugs into your vehicle's exhaust manifold. Your vehicle also has a downstream sensor on the exhaust pipe under the car; please verify which one your vehicle needs, or consider replacing them both for better long-term reliability!