Delphi ES20185 Oxygen Sensor - Front
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Delphi

Delphi ES20185 Oxygen Sensor - Front

Brand Delphi ES20185
Position Front
Connector Shape Round
Overall Length 980.0
Package Contents Oxygen Sensor, Instruction Sheet
Sensor Type Heated
Thread Size 18 x 1.5 mm
Wire Quantity 4
Fits Mercedes-Benz · 3 vehicles

Heated sensor. Helps the oxygen sensor reach operating temperature quickly.

Round connector. Simplifies a clean, secure electrical connection.

OE heritage. Built on 100 years of OE experience and supplier knowledge.

Cross-references Bosch 13515, 000 540 64 17 and 000 540 65 17 for the same application. See all 12.

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Delphi ES20185 Oxygen Sensor for Mercedes-Benz C220

The Delphi ES20185 is a heated oxygen sensor built for front-position applications on select Mercedes-Benz C220 models. It combines OE-based engineering with the fitment and electrical specifications needed for accurate exhaust monitoring.

Key Features

  • Heated oxygen sensor for faster operating temperature and stable signal output
  • 4-wire design with a round connector shape
  • 18 x 1.5 mm thread size for the specified exhaust bung
  • 980.0 overall length for the listed application
  • Includes oxygen sensor and instruction sheet
  • Front position fitment for select Mercedes-Benz C220 applications

Detailed Description

Delphi ES20185 is an OE-style oxygen sensor backed by Delphi’s long history supplying original equipment to major automakers. Built with OE heritage and application knowledge, this sensor is specified for front placement on 1995-1996 Mercedes-Benz C220 models and also lists 1994 Mercedes-Benz C220 fitment. It is a practical replacement choice when you need a heated sensor with the correct 4-wire configuration, round connector, and 18 x 1.5 mm thread size. This part cross-references Bosch 13515 for the same application.

What It Helps Address

  • Check engine light related to oxygen sensor performance
  • Incorrect air-fuel ratio readings from a worn front sensor
  • Slow sensor response during cold starts
  • Emissions test failures tied to exhaust monitoring faults
  • Rough idle or drivability issues caused by inaccurate exhaust feedback

Installation Notes and Tips

Verify the connector shape, wire count, thread size, and front position before installation. Confirm the vehicle application for your Mercedes-Benz C220 by year and position, since this part is listed for 1994, 1995, and 1996 model years with front-position coverage on the applicable vehicles. Inspect the exhaust threads and wiring routing before fitting the new sensor, and compare the removed unit to the Delphi ES20185 to confirm match-up.

Quality Assurance

Delphi builds this oxygen sensor using OE experience and supplier knowledge developed over decades of original equipment production. The ES20185 reflects that background in an aftermarket replacement designed around the listed Mercedes-Benz C220 applications.

Related reading

This part fits 3 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1996Mercedes-BenzC220Front—
1995Mercedes-BenzC220Front—
1994Mercedes-BenzC220N/A—
Directly replaces or cross-references 12 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 13515000 540 64 17000 540 65 17138-329234-471025556213145125024180OS864REA1369SG180SU7280