Delphi ES20042 Oxygen Sensor - Rear Left or Rear Right

Delphi ES20042 Oxygen Sensor Overview

The Delphi ES20042 is a heated oxygen sensor built for rear left and rear right applications on select Chrysler Sebring and Dodge Avenger models. It uses a 4-wire design, round connector shape, and 18 x 1.5 mm thread size to match the specified OE-style installation points.

Built from Delphi’s OE heritage and decades of supplier experience, this oxygen sensor is made for accurate exhaust monitoring on the listed vehicles. The ES20042 is a direct-fit replacement for rear sensor locations where proper emissions feedback is required.

Key Features

• Heated oxygen sensor for faster operating temperature and stable signal output
• 4-wire configuration for the listed rear sensor applications
• Round connector shape for OE-style electrical connection
• 18 x 1.5 mm thread size for the specified mounting location
• 1320.0 overall length for the listed fitments
• Includes oxygen sensor and instruction sheet
• Fits rear left and rear right positions on select Chrysler Sebring and Dodge Avenger models

Detailed Description

Delphi ES20042 is an emission control oxygen sensor engineered for rear sensor placement on 1996-2000 Chrysler Sebring and Dodge Avenger applications. It is listed for rear left and rear right positions, including 1998-2000 Chrysler Sebring and Dodge Avenger models without California Emission System, as well as 1996-1997 Chrysler Sebring and Dodge Avenger models. This part number, ES20042, is also referenced by Bosch 13413 and DENSO Auto Parts 234-4075 for the same application.

As a heated oxygen sensor, it helps the engine management system monitor exhaust oxygen content after the catalytic converter. That makes it an important replacement when servicing rear O2 sensor faults on Chrysler Sebring or Dodge Avenger vehicles. Delphi’s OE background is reflected in the sensor’s application-specific design and connector configuration.

Common Issues This Sensor May Address

• Check engine light related to rear oxygen sensor performance
• Fault codes tied to slow sensor response or heater circuit issues
• Incorrect exhaust feedback from a worn rear O2 sensor
• Emissions test failures caused by a failing rear sensor
• Rough fuel control behavior linked to inaccurate exhaust readings

Installation Notes and Tips

• Confirm the exact rear left or rear right position for your vehicle before ordering.
• Verify thread size, connector shape, and wire count against the original sensor.
• Use the application details for 1996-2000 Chrysler Sebring and Dodge Avenger models, including the California-emissions note where listed.
• Inspect the harness routing and connector condition before installation.
• Follow the included instruction sheet and clear diagnostic trouble codes after replacement.

Quality Assurance

Delphi builds this oxygen sensor using OE experience developed through long-term supply relationships with major automakers. The ES20042 reflects that heritage in its fitment-specific design, connector style, and emissions-control application.