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Audi Upstream Oxygen Sensor – Bosch 17199

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SKU 17199
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Original price $75.95 - Original price $75.95
Original price
$75.95
$75.95 - $75.95
Current price $75.95
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Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts.

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This Bosch 17199 upstream oxygen sensor fits multiple Audi models including A4, A5, and Q7 with 2.0L turbo engines from 2019-2020. It provides precise air-fuel ratio feedback for optimal engine performance and emissions control. A direct OE replacement from Bosch.

Key Features & Benefits

  • Direct fit for Audi 2.0T engines (A4, A5, Q7).
  • Bosch OE quality for reliable performance.
  • Comprehensive vehicle coverage across multiple models.

Vehicle Fitment

Make Model Years Engine
Audi A5 Sportback 2019–2020 2.0L4
Audi A5 Quattro 2019–2020 2.0L4
Audi A4 allroad 2019–2020 2.0L4
Audi A4 Quattro 2019–2020 2.0L4
Audi Q7 2019 2.0L4

Technical Specifications

Part Number 17199
Weight 0.229281 lb

Installation Notes

Professional installation recommended.

About Bosch

Bosch is a leading global supplier of automotive technology, renowned for developing the first oxygen sensor in the late 1960s. Their sensors are OE on many vehicles.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 5 applications
Audi A4 (B9)
Make Model Engine Years
Audi A4 allroad 2.0L4 2019–2020
Audi A4 Quattro 2.0L4 2019–2020
Audi A5 (B9)
Make Model Engine Years
Audi A5 Sportback 2.0L4 2019–2020
Audi A5 Quattro 2.0L4 2019–2020
Audi Q7 (Type 4M)
Make Model Engine Years
Audi Q7 2.0L4 2019–2019
Fits 5 vehicle applications Check vehicle fitment before ordering View fitment

About this Oxygen Sensor

The BOSCH 17199 oxygen sensor measures the oxygen in the exhaust so the engine computer can keep the fuel mixture correct. Sensors before the catalytic converter control the mixture; sensors after it monitor the converter's efficiency.

Frequently asked questions

What does an oxygen sensor do?

It reports how rich or lean the exhaust is, and the engine computer adjusts fuel delivery in response. A faulty sensor can make the engine run too rich or too lean.

What are the signs of a failing oxygen sensor?

A check-engine light with oxygen-sensor or fuel-trim codes, poorer fuel economy, rough idle, or a failed emissions test. Exhaust leaks near the sensor can cause similar codes, so check for those too.

How do I know which sensor I need?

Sensors are specific to their position: upstream (before the catalytic converter) or downstream (after it), and on V engines, bank 1 or bank 2. The fault code usually identifies the position; check the product details for the position this sensor fits.

Can I replace an oxygen sensor myself?

Usually, yes, using an oxygen-sensor socket. Many new sensors come with anti-seize already on the threads; if not, use a sensor-safe compound only on the threads, and keep it off the sensor tip.

How do I make sure this oxygen sensor fits my car?

Compare the part numbers listed on this page with the number on your old part or in your vehicle's parts catalog, and check the fitment information. If you are unsure, contact us with your VIN before ordering.