Delphi ES20376 Oxygen Sensor - Rear, Rear Left or Rear Right
OE Quality 60-Day Returns
Delphi

Delphi ES20376 Oxygen Sensor - Rear, Rear Left or Rear Right

Brand Delphi ES20376
Position Rear
Connector Shape Round
Overall Length 455.0
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 · 59 vehicles

Heated sensor. Provides faster operation for more responsive emissions monitoring.

Round connector. Simplifies connection with a clean, secure fit.

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

Cross-references Bosch 16320, Bosch 16808 and Bosch 16864 for the same application. See all 15.

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Delphi ES20376 Oxygen Sensor Overview

Delphi ES20376 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, making it a direct-fit replacement for vehicles that call for this configuration.

Backed by Delphi’s OE heritage and decades of supplier experience, this oxygen sensor is built with the application details needed for accurate exhaust monitoring on BMW X5, BMW X6, BMW M3, and related rear sensor positions.

Key Features

  • Heated oxygen sensor for rear, rear left, and rear right positions
  • 4-wire construction for the specified vehicle applications
  • Round connector shape for proper electrical connection
  • 18 x 1.5 mm thread size for direct installation in the exhaust stream
  • Overall length: 455.0
  • Package contents: oxygen sensor and instruction sheet
  • Delphi ES20376 replacement for select BMW and Mercedes-Benz models

Detailed Description

Delphi ES20376 is an emission control oxygen sensor engineered for rear sensor service on a range of BMW and Mercedes-Benz vehicles. It is listed for rear positions on 2008-2013 BMW M3, 2010-2013 BMW X5, 2010-2014 BMW X6, and rear left or rear right positions on select BMW 5 Series, 6 Series, 7 Series, X5, and Mercedes-Benz CLK applications. For exact placement, follow the vehicle-specific application data.

This part cross-references Bosch 16320 and DENSO Auto Parts 234-4875 for the same application. If you are replacing a worn rear oxygen sensor on a BMW X5 or BMW X6, or servicing a rear sensor on a Mercedes-Benz CLK320, ES20376 provides the fitment details needed for a proper match.

What It Helps Address

  • Check engine light related to rear oxygen sensor performance
  • Incorrect exhaust oxygen readings reported to the engine control system
  • Fault codes tied to slow sensor response or heater circuit issues
  • Emissions inspection failures caused by a failing rear O2 sensor
  • Rough fuel-trim correction caused by inaccurate exhaust feedback

Installation Notes and Tips

Confirm the sensor position before ordering, since ES20376 is listed for rear, rear left, and rear right locations depending on the vehicle. Some BMW applications note a 325 mm gray sensor variant, and certain 2006-2007 BMW 525i, 525xi, 530i, and 530xi applications specify a sensor located in the front manifold/exhaust pipe. Match the connector shape, thread size, and overall length to the original part before installation.

Use the vehicle application tab to verify the exact fit for your year, make, model, and sensor position. Delphi ES20376 is a direct replacement choice for select BMW and Mercedes-Benz exhaust sensor service.

Quality Assurance

Delphi builds aftermarket parts using OE experience and knowledge developed through long-term supplier relationships with major automakers. ES20376 reflects that OE-based engineering approach for emission control service.

Related reading

This part fits 59 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelPositionNotes
2014BMWX6—Rear—
2013BMWM3—Rear—
2013BMWX5MRear—
2013BMWX6—Rear—
2012BMWM3—Rear—
2012BMWX5MRear—
2012BMWX6—Rear—
2011BMWM3—Rear—
2011BMWX5MRear—
2011BMWX6—Rear—
2010BMW550i—Rear RightFits oxygen sensors that are 325mm long and gray.
2010BMW650i—Rear RightFits oxygen sensors that are 325mm long and gray.
2010BMWM3—Rear—
2010BMWX5—Rear Right—
2010BMWX5—Rear Left—
2010BMWX5—Rear—
2010BMWX6—Rear—
2009BMW550i—Rear RightFits oxygen sensors that are 325mm long and gray.
2009BMW650i—Rear RightFits oxygen sensors that are 325mm long and gray.
2009BMWM3—Rear—
2009BMWX5—Rear Right—
2009BMWX5—Rear Left—
2008BMW550i—Rear RightFits oxygen sensors that are 325mm long and gray.
2008BMW650i—Rear RightFits oxygen sensors that are 325mm long and gray.
2008BMW750i—Rear RightFits oxygen sensors that are 325mm long and gray.
2008BMW750Li—Rear RightFits oxygen sensors that are 325mm long and gray.
2008BMW760Li—Rear RightFits oxygen sensors that are 325mm long and gray.
2008BMW760Li—Rear Left—
2008BMWM3—Rear—
2008BMWX5—Rear RightFits oxygen sensors that are 325mm long and gray.
2008BMWX5—Rear Left—
2007BMW525i—RearSensor Located in Front Manifold/Exhaust Pipe
2007BMW525xi—RearSensor Located in Front Manifold/Exhaust Pipe
2007BMW530i—RearSensor Located in Front Manifold/Exhaust Pipe
2007BMW530xi—RearSensor Located in Front Manifold/Exhaust Pipe
2007BMW550i—Rear RightFits oxygen sensors that are 325mm long and gray.
2007BMW650i—Rear RightFits oxygen sensors that are 325mm long and gray.
2007BMW750i—Rear RightFits oxygen sensors that are 325mm long and gray.
2007BMW750Li—Rear RightFits oxygen sensors that are 325mm long and gray.
2007BMW760Li—Rear RightFits oxygen sensors that are 325mm long and gray.
2007BMW760Li—Rear Left—
2007BMWX5—Rear RightFits oxygen sensors that are 325mm long and gray.
2007BMWX5—Rear Left—
2006BMW525i—RearSensor Located in Front Manifold/Exhaust Pipe
2006BMW525xi—RearSensor Located in Front Manifold/Exhaust Pipe
2006BMW530i—RearSensor Located in Front Manifold/Exhaust Pipe
2006BMW530xi—RearSensor Located in Front Manifold/Exhaust Pipe
2006BMW550i—Rear RightFits oxygen sensors that are 325mm long and gray.
2006BMW650i—Rear RightFits oxygen sensors that are 325mm long and gray.
2006BMW750i—Rear RightFits oxygen sensors that are 325mm long and gray.
2006BMW750Li—Rear RightFits oxygen sensors that are 325mm long and gray.
2003Mercedes-BenzCLK320—Rear Left—
2003Mercedes-BenzCLK430—Rear Left—
2002Mercedes-BenzCLK320—Rear Left—
2002Mercedes-BenzCLK430—Rear Left—
2002Mercedes-BenzCLK55 AMG—Rear Left—
2001Mercedes-BenzCLK320—Rear Left—
2001Mercedes-BenzCLK430—Rear Left—
2001Mercedes-BenzCLK55 AMG—Rear Left—
Directly replaces or cross-references 15 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 16320Bosch — 16808Bosch — 16864DENSO Auto Parts — 234-4875DENSO Auto Parts — 234-4877DENSO Auto Parts — 234-4893Walker Exhaust — 16793001 540 71 175S979111 78 7 539 12511 78 7 544 65411 78 7 558 1792561225024464SU11244