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Audi Oxygen Sensor – Upstream – Bosch 17056

Audi Oxygen Sensor – Upstream – Bosch 17056

BOSCH
Availability:
Out of stock
SKU 17056
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$78.95 - $78.95
$78.95
$78.95 - $78.95
$78.95
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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Bosch upstream oxygen sensor (part 17056) is designed for Audi models equipped with the 4.0L V8 twin-turbo engine. It measures the air-fuel ratio upstream of the catalytic converter to optimize combustion and reduce emissions. Bosch is a trusted OEM supplier for Audi sensors.

Key Features & Benefits

  • Wideband sensor: Provides precise air-fuel ratio readings for turbocharged engines.
  • OE fitment: Direct replacement for Audi S6, S7, RS7, S8, and A8 Quattro (4.0 V8 2013-2018).
  • Durable construction: Designed to withstand high exhaust temperatures and pressure.
  • Improves efficiency: Helps maintain optimal fuel mixture for performance and fuel economy.

Vehicle Fitment

Make Model Years Engine
Audi S8 2013–2018 4.0V8
Audi S7 2013–2018 4.0V8
Audi S6 2013–2018 4.0V8
Audi RS7 2014–2018 4.0V8
Audi A8 Quattro 2013–2018 4.0V8

Technical Specifications

Part Number 17056
Sensor Type Air/Fuel Ratio (Wideband) Oxygen Sensor
Position Upstream
Vehicle Applications Audi S6, S7, RS7, S8, A8 Quattro 4.0 V8 2013-2018
Brand Bosch

Installation Notes

Direct plug-in 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 5 applications
D4 A8/S8
Make Model Engine Years
Audi S8 4.0V8 2013–2018
Audi A8 Quattro 4.0V8 2013–2018
C7 A6/S6
Make Model Engine Years
Audi S6 4.0V8 2013–2018
C7 A7/S7
Make Model Engine Years
Audi S7 4.0V8 2013–2018
Audi RS7 4.0V8 2014–2018
Fits 5 vehicle applications Check vehicle fitment before ordering View fitment

About this Oxygen Sensor

The BOSCH 17056 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.

Euromotiv is an independent retailer of OEM, Genuine, and aftermarket automotive parts. We are not affiliated with, endorsed by, or authorized by Audi AG, Volkswagen AG, BMW AG, Mercedes-Benz Group AG, Dr. Ing. h.c. F. Porsche AG, MINI, or any other vehicle manufacturer. All trademarks, logos, and brand names are the property of their respective owners and are used solely for identification and compatibility purposes.