Delphi ES20017 Oxygen Sensor - Front or Rear

Delphi ES20017 Oxygen Sensor Overview

The Delphi ES20017 is a heated oxygen sensor built for emission control service on a wide range of Chrysler, Dodge, Jeep, and Plymouth applications. It uses a 4-wire design with a square connector and 18 x 1.5 mm thread size for direct-fit replacement where specified.

With OE heritage built from more than a century of supplier experience, Delphi applies original-equipment knowledge to aftermarket service parts. This oxygen sensor is listed for front and rear positions depending on the vehicle application, including Chrysler Concorde, Dodge Ram 1500, and Jeep Cherokee coverage.

Key Features

• Heated oxygen sensor for emission control system service
• 4-wire configuration with square connector
• 18 x 1.5 mm thread size
• 300.0 overall length
• Package includes the oxygen sensor and instruction sheet
• Position-specific coverage for front and rear applications
• Delphi ES20017 part number for direct identification

Application Details

Compatible With 1988-1995 Chrysler LeBaron, 1989-1995 Dodge Caravan, 1991-1995 Jeep Cherokee, and other listed Chrysler, Dodge, Jeep, and Plymouth vehicles. Fits 1994-1995 Dodge Ram 1500, rear, with 12in pigtail. Fits 1995-1996 Dodge Neon, front, with 300mm overall length. Fits 1994-1995 Chrysler Concorde, standard or optional, with 18in pigtail. This part cross-references DENSO Auto Parts (e.g., 234-4002, 234-4004) for the same application.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture readings
• Reduced fuel economy caused by faulty exhaust feedback
• Emission test failures tied to sensor response issues
• Rough idle or drivability concerns from inaccurate exhaust data

Installation Notes

Confirm the required position on your vehicle before ordering, since this sensor is listed for front and rear locations depending on application. Verify connector shape, wire count, thread size, and overall length against the original part before installation. Use the vehicle application details to match the correct Chrysler, Dodge, Jeep, or Plymouth fitment for your model year.

Quality Assurance

Delphi draws on OE heritage and supplier experience from more than 100 years in the automotive industry. That background is reflected in the ES20017 oxygen sensor’s construction and application coverage for service replacement use.