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Bosch Audi Upstream Oxygen Sensor (Air/Fuel Ratio) 17031

Bosch Audi Upstream Oxygen Sensor (Air/Fuel Ratio) 17031

BOSCH
Availability:
Out of stock
SKU 17031
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$78.89 - $78.89
$78.89
$78.89 - $78.89
$78.89
CALIFORNIA WARNING

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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The Bosch Air/Fuel Ratio Sensor (part 17031) is designed for Audi A8 Quattro models with the 6.3L W12 engine (2012-2014). It measures the air-to-fuel ratio in the exhaust, providing real-time feedback to the ECU for optimal combustion efficiency and lower emissions.

Key Features & Benefits

  • Advanced sensing technology: Provides accurate air/fuel ratio readings for precise engine control.
  • Direct replacement: OE-quality sensor ensures seamless integration with Audi engine management.
  • Improves performance: Helps maintain optimal fuel mixture for power and efficiency.
  • Durable construction: Built to withstand high exhaust temperatures.

Vehicle Fitment

Make Model Years Engine
Audi A8 Quattro 2012–2014 6.3W12

Technical Specifications

Part Number 17031
Sensor Type Air/Fuel Ratio Sensor (Wideband)
Position Upstream
Vehicle Application Audi A8 Quattro 6.3W12 2012-2014
Brand Bosch

Installation Notes

Direct plug-and-play replacement; professional installation recommended.

About Bosch

Bosch is a global leader in automotive technology and a top OE supplier for oxygen sensors and engine management systems.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 1 application
D4 A8
Make Model Engine Years
Audi A8 Quattro 6.3W12 2012–2014
Fits 1 vehicle applications Check vehicle fitment before ordering View fitment

About this Oxygen Sensor

The BOSCH 17031 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.

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