Delphi ES20173 Oxygen Sensor - Rear, Rear Left or Rear Right
OE Quality 60-Day Returns
Delphi

Delphi ES20173 Oxygen Sensor - Rear, Rear Left or Rear Right

Brand Delphi ES20173
Position Rear
Connector Shape Round
Overall Length 430.0
Package Contents Oxygen Sensor, Instruction Sheet
Position(s) Rear, Rear Left, Rear Right. For the position specific to your vehicle, refer to the Application tab.
Sensor Type Heated
Thread Size 18 x 1.5 mm
Wire Quantity 4
Fits BMW and Mercedes-Benz · 102 vehicles

Heated sensor. Helps the sensor reach operating temperature quickly.

Round connector. Simplifies a secure electrical connection.

OE heritage. Built with decades of original-equipment experience.

Cross-references Bosch 16183, Bosch 16328 and Bosch 16792 for the same application. See all 32.

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Delphi ES20173 Rear Oxygen Sensor

The Delphi ES20173 is a heated oxygen sensor built for rear sensor locations on select BMW and Mercedes-Benz applications. It uses a 4-wire design with a round connector and 18 x 1.5 mm thread size for OE-style replacement on vehicles such as the BMW M5, BMW M6, and Mercedes-Benz E-Class and SL models.

Key Features

  • Heated oxygen sensor for rear exhaust monitoring
  • 4-wire design with round connector shape
  • 18 x 1.5 mm thread size
  • Overall length: 430.0
  • Package includes the oxygen sensor and instruction sheet
  • Position-specific coverage for rear, rear left, and rear right applications

Application Details

Compatible With 2014-2019 BMW M6 Gran Coupe, rear; 2012-2018 BMW M6, rear; 2013-2016 BMW M5, rear; and 2009-2010 BMW 528i and 528i xDrive, rear. It also covers rear sensor applications on Mercedes-Benz models including the SLR McLaren, SL55 AMG, C55 AMG, CLK500, CLK55 AMG, CLS500, CLS55 AMG, E500, E55 AMG, SL500, C240, C320, CLK320, E320, C32 AMG, ML500, R500, and related rear left or rear right positions where listed.

Delphi builds this part from OE heritage and supplier experience developed over decades of original-equipment service. The ES20173 is a direct-fit style replacement for rear oxygen sensor service on BMW M5 and BMW M6 applications as well as select Mercedes-Benz rear exhaust locations. This part cross-references Bosch 16183 and DENSO Auto Parts 234-4892 for the same application.

What It Helps Address

  • Check engine light related to rear oxygen sensor performance
  • Incorrect exhaust feedback from a worn heated sensor
  • Emissions monitoring faults on BMW and Mercedes-Benz rear sensor locations
  • Rough or inconsistent fuel control caused by inaccurate sensor readings
  • Failed inspection results tied to oxygen sensor diagnostics

Installation Notes

Verify the exact rear, rear left, or rear right position for your vehicle before ordering. Confirm connector shape, thread size, and overall length against the original sensor, especially on BMW 528i, 530i, 525i, and 530xi applications that note a 380 mm length in the fitment data. Follow the included instruction sheet and inspect the exhaust bung and wiring routing before installation.

Quality Assurance

Delphi draws on OE experience and original-equipment supplier knowledge to produce aftermarket emission control parts with application-specific fitment and construction. The ES20173 is engineered for rear oxygen sensor replacement on confirmed BMW and Mercedes-Benz applications.

Related reading

This part fits 102 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelPositionNotes
2019BMWM6 Gran Coupe—Rear—
2018BMWM6—Rear—
2018BMWM6 Gran Coupe—Rear—
2017BMWM6—Rear—
2017BMWM6 Gran Coupe—Rear—
2016BMWM5—Rear—
2016BMWM6—Rear—
2016BMWM6 Gran Coupe—Rear—
2015BMWM5—Rear—
2015BMWM6—Rear—
2015BMWM6 Gran Coupe—Rear—
2014BMWM5—Rear—
2014BMWM6—Rear—
2014BMWM6 Gran Coupe—Rear—
2013BMWM5—Rear—
2013BMWM6—Rear—
2012BMWM6—Rear—
2010BMW528i—RearSensor Located in Rear Manifold/Exhaust Pipe
2010BMW528i xDrive—RearSensor Located in Rear Manifold/Exhaust Pipe
2009BMW528i—RearSensor Located in Rear Manifold/Exhaust Pipe
2009BMW528i xDrive—RearSensor Located in Rear Manifold/Exhaust Pipe
2009Mercedes-BenzSLR McLaren—Rear—
2008BMW528i—RearSensor Located in Rear Manifold/Exhaust Pipe; 380mm Length
2008BMW528xi—RearSensor Located in Rear Manifold/Exhaust Pipe; 380mm Length
2008BMWZ4—RearCylinders 4 through 6
2008Mercedes-BenzSL55 AMG—Rear—
2008Mercedes-BenzSLR McLaren—Rear—
2007BMW525i—RearSensor Located in Rear Manifold/Exhaust Pipe; 380mm Length
2007BMW525xi—RearSensor Located in Rear Manifold/Exhaust Pipe; 380mm Length
2007BMW530i—RearSensor Located in Rear Manifold/Exhaust Pipe; 380mm Length
2007BMW530xi—RearSensor Located in Rear Manifold/Exhaust Pipe; 380mm Length
2007BMWZ4—RearCylinders 4 through 6
2007Mercedes-BenzML500—Rear Right—
2007Mercedes-BenzML500—Rear Left—
2007Mercedes-BenzR500—Rear Right—
2007Mercedes-BenzR500—Rear Left—
2007Mercedes-BenzSL55 AMG—Rear—
2007Mercedes-BenzSLR McLaren—Rear—
2006BMW525i—RearSensor Located in Rear Manifold/Exhaust Pipe; 380mm Length
2006BMW525xi—RearSensor Located in Rear Manifold/Exhaust Pipe; 380mm Length
2006BMW530i—RearSensor Located in Rear Manifold/Exhaust Pipe; 380mm Length
2006BMW530xi—RearSensor Located in Rear Manifold/Exhaust Pipe; 380mm Length
2006BMWZ4—RearCylinders 4 through 6
2006Mercedes-BenzC55 AMG—Rear—
2006Mercedes-BenzCLK500—Rear—
2006Mercedes-BenzCLK55 AMG—Rear—
2006Mercedes-BenzCLS500—Rear—
2006Mercedes-BenzCLS55 AMG—Rear—
2006Mercedes-BenzE500—Rear—
2006Mercedes-BenzE55 AMG—Rear—
2006Mercedes-BenzML500—Rear Right—
2006Mercedes-BenzML500—Rear Left—
2006Mercedes-BenzR500—Rear Right—
2006Mercedes-BenzR500—Rear Left—
2006Mercedes-BenzSL500—Rear—
2006Mercedes-BenzSL55 AMG—Rear—
2006Mercedes-BenzSLR McLaren—Rear—
2005Mercedes-BenzC240BaseRear—
2005Mercedes-BenzC2404MaticRear Right—
2005Mercedes-BenzC320BaseRear—
2005Mercedes-BenzC3204MaticRear Right—
2005Mercedes-BenzC55 AMG—Rear—
2005Mercedes-BenzCLK320—Rear—
2005Mercedes-BenzCLK500—Rear—
2005Mercedes-BenzCLK55 AMG—Rear—
2005Mercedes-BenzE320—Rear—
2005Mercedes-BenzE500—Rear—
2005Mercedes-BenzE55 AMG—Rear—
2005Mercedes-BenzSL500—Rear—
2005Mercedes-BenzSL55 AMG—Rear—
2005Mercedes-BenzSLR McLaren—Rear—
2004Mercedes-BenzC240BaseRear—
2004Mercedes-BenzC2404MaticRear Right—
2004Mercedes-BenzC32 AMG—Rear—
2004Mercedes-BenzC320BaseRear—
2004Mercedes-BenzC3204MaticRear Right—
2004Mercedes-BenzCLK320—Rear—
2004Mercedes-BenzCLK500—Rear—
2004Mercedes-BenzCLK55 AMG—Rear—
2004Mercedes-BenzE320—Rear—
2004Mercedes-BenzE500—Rear—
2004Mercedes-BenzE55 AMG—Rear—
2004Mercedes-BenzSL500—Rear—
2004Mercedes-BenzSL55 AMG—Rear—
2003Mercedes-BenzC240BaseRear—
2003Mercedes-BenzC2404MaticRear Right—
2003Mercedes-BenzC32 AMG—Rear—
2003Mercedes-BenzC320BaseRear—
2003Mercedes-BenzC3204MaticRear Right—
2003Mercedes-BenzCLK320—Rear—
2003Mercedes-BenzCLK500—Rear—
2003Mercedes-BenzCLK55 AMG—Rear—
2003Mercedes-BenzE320BaseRear—
2003Mercedes-BenzE500—Rear—
2003Mercedes-BenzE55 AMG—Rear—
2003Mercedes-BenzSL500—Rear—
2003Mercedes-BenzSL55 AMG—Rear—
2002Mercedes-BenzC240BaseRear—
2002Mercedes-BenzC32 AMG—Rear—
2002Mercedes-BenzC320BaseRear—
2001Mercedes-BenzC240BaseRear—
2001Mercedes-BenzC320BaseRear—
Directly replaces or cross-references 32 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 16183Bosch — 16328Bosch — 16792Bosch — 16809DENSO Auto Parts — 234-4892DENSO Auto Parts — 234-4898DENSO Auto Parts — 234-4899Four Seasons — 16753NTK — 25613001 540 46 17001 540 76 17002 540 56 175S97875S97925S101155S101205S1013111 78 7 539 13711 78 7 544 655156-4418800 06048800 33047800 3305525024465OS1913REA1689SG1159SU11240SU11245SU11568SU11573SU11584