Bosch 17206 Oxygen Sensor – Audi A3 VW Golf GTI (2015–2019) Upstream

Bosch 17206 Upstream Oxygen O₂ Sensor for Audi & Volkswagen Vehicles The Bosch 17206 Oxygen Sensor is a premium upstream replacement designed for Audi A3 and Volkswagen Golf / GTI models from 2015 to 2019. Located before the catalytic converter, this sensor monitors oxygen content in the exhaust to help the engine control module (ECM) maintain the ideal air-fuel mixture for efficient combustion. A failing upstream oxygen sensor can cause poor fuel economy, sluggish acceleration, rough idle, and check engine lights. The Bosch 17206 O2 sensor is manufactured to OEM specifications to deliver fast response times, accurate readings, and long-lasting durability under extreme exhaust heat. Replacing the sensor restores engine efficiency, emissions compliance, and smooth driving performance. Key Features & Benefits OEM-quality Bosch upstream oxygen sensor Direct-fit replacement for Bosch 17206 Accurate air-fuel ratio monitoring before catalytic converter Improves fuel efficiency and throttle response Helps reduce exhaust emissions Fast sensor response for precise ECU adjustments High-temperature resistant construction Plug-and-play installation with factory connector OEM / Interchange Part Number Bosch 17206 Engine Compatibility Audi & Volkswagen gasoline engines(Exact engine fitment varies—verify by VIN before purchase.) Vehicle Applications Audi A3: 2015, 2016, 2017, 2018, 2019 Volkswagen Golf: 2015, 2016, 2017, 2018, 2019 Volkswagen GTI: 2015, 2016, 2017, 2018, 2019 Frequently Asked Questions – Bosch 17206 Oxygen Sensor What does the Bosch 17206 oxygen sensor do? It measures exhaust oxygen levels before the catalytic converter to help the engine computer maintain the correct air-fuel mixture. Is this an upstream oxygen sensor? Yes, the Bosch 17206 is an upstream oxygen sensor installed before the catalytic converter. Which vehicles does this sensor fit? This sensor fits 2015–2019 Audi A3, Volkswagen Golf, and Volkswagen GTI models. What are symptoms of a bad oxygen sensor? Common symptoms include poor fuel economy, check engine light, rough idle, hesitation, and reduced engine performance. Is this an OEM-quality replacement part? Yes, Bosch manufactures this sensor to meet or exceed original equipment standards. Does replacing the sensor improve fuel economy? Yes, accurate oxygen readings help maintain proper fuel mixture and improve overall fuel efficiency. SKU: FDP-17206 Categories: Turbo-P, Turbo-s Tags: Audi A3 oxygen sensor, Bosch 17206, Bosch O2 sensor, GTI oxygen sensor, upstream oxygen sensor, VW Golf O2 sensor