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Bosch Downstream Oxygen Sensor (18194) – Fits Audi Q7, A6, A7, A8

Bosch Downstream Oxygen Sensor (18194) – Fits Audi Q7, A6, A7, A8

BOSCH
Availability:
Out of stock
SKU 18194
Sold out
$40.95 - $40.95
$40.95
$40.95 - $40.95
$40.95
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 oxygen sensor (part 18194) is a high-quality downstream (post-catalyst) sensor designed for select Audi models. It precisely measures exhaust oxygen content to optimize the air-fuel mixture, improving fuel efficiency and reducing emissions. OE-quality construction ensures long service life and direct fit replacement.

Key Features & Benefits

  • Precise oxygen measurement: Ensures optimal air-fuel ratio for improved engine efficiency and lower emissions.
  • Long service life: Typical lifespan of 100,000 miles reduces replacement frequency.
  • Steel construction: Durable steel housing withstands high exhaust temperatures.
  • Direct fit replacement: Designed to install without modifications for a hassle-free swap.

Vehicle Fitment

Make Model Years Engine
Audi Q7 2019 3.0V6
Audi A8 Quattro 2015–2017 3.0V6
Audi A8 Quattro 2018 3.0V6
Audi A7 Quattro 2016–2018 3.0V6
Audi A6 Quattro 2016–2018 3.0V6

Technical Specifications

Part Number 18194
Weight 0.253532 lb
Finish Steel

Installation Notes

Direct replacement; professional installation recommended to ensure proper torque and sealing.

About Bosch

Bosch is a globally recognized leader in automotive technology, known for high-quality OE and aftermarket parts.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 5 applications
4M Q7
Make Model Engine Years
Audi Q7 3.0V6 2019–2019
D4 A8
Make Model Engine Years
Audi A8 Quattro 3.0V6 2015–2017
D5 A8
Make Model Engine Years
Audi A8 Quattro 3.0V6 2018–2018
C7 A7
Make Model Engine Years
Audi A7 Quattro 3.0V6 2016–2018
C7 A6
Make Model Engine Years
Audi A6 Quattro 3.0V6 2016–2018
Fits 5 vehicle applications Check vehicle fitment before ordering View fitment

About this Oxygen Sensor

The BOSCH 18194 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.