Bosch Oxygen Sensor P/N:17347

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$112.99

MPN: 17347

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Bosch Oxygen Sensor P/N:17347

$112.99

Description

Keep closed-loop fuel control accurate with the Bosch Oxygen Sensor 17347, cataloged for the upstream (pre-catalyst) position — including upstream left and upstream right bank locations. It fits a range of Mercedes-Benz models, including the 2015 Mercedes-Benz C400, 2017-2023 Mercedes-Benz C43 AMG, 2014-2017 Mercedes-Benz S550, 2020-2025 Mercedes-Benz GLE580, and the Mercedes-Benz SL63 AMG in 2014-2019 and 2022; see the Buyer's Guide tab for the full list of 25 applications.

Upstream sensor: mounted in the exhaust ahead of the catalytic converter, it measures the oxygen content of the exhaust and signals the engine control unit for closed-loop air-fuel ratio adjustment.
Bank coverage: cataloged in upstream, upstream left, and upstream right positions.
Direct-fit replacement: designed to install for the listed applications.

A worn oxygen sensor can slow or skew the signal the ECU uses to trim fueling. Signs it may need replacing include an illuminated check engine light, a lean or rich fuel-trim code, higher fuel consumption, or a rough idle. If a failed upstream sensor is the cause, this replaces it; diagnose the underlying fault before replacing.

Interchange: Manufacturer part number 17347.

Manufacturer's Description

Product Specs

Buyer's Guide

Interchange Part Numbers

Frequently Asked Questions

What does this oxygen sensor do?

It measures the oxygen content of the exhaust upstream of the catalytic converter and signals the engine control unit, which uses that reading to adjust the air-fuel ratio in closed-loop operation.

Where is it installed?

It is cataloged for the upstream (pre-catalyst) position, including upstream left and upstream right bank locations depending on the application.

Which vehicles does it fit?

It fits 25 Mercedes-Benz applications, such as the 2015 C400, 2017-2023 C43 AMG, 2014-2017 S550, and 2020-2025 GLE580. See the Buyer's Guide tab for the complete list.

What are signs this sensor may need replacing?

Common signs include a check engine light, lean or rich fuel-trim codes, increased fuel consumption, or a rough idle. These can have other causes, so diagnose the fault before replacing.

Will replacing it fix my check engine light?

Only if a failed upstream oxygen sensor is the actual cause. The same symptoms can stem from other issues, so confirm the diagnosis before installing this part.