Delphi ES20216 Oxygen Sensor - Rear or Rear Left

Delphi ES20216 Oxygen Sensor Overview

The Delphi ES20216 is a heated oxygen sensor built for rear exhaust monitoring on select Nissan and INFINITI applications. It combines OE-based engineering with a 4-wire design, square connector, and 18 x 1.5 mm thread size for direct-fit replacement service.

Compatible with 2000-2002 Nissan Sentra, 2000 Nissan Altima, and 2000-2001 INFINITI G20 applications listed below, this Delphi oxygen sensor supports accurate exhaust feedback for vehicles using rear sensor placement. The ES20216 is a practical choice when replacing a worn rear oxygen sensor on a Nissan Sentra or INFINITI G20.

Key Features

• Heated oxygen sensor for faster operating temperature
• 4-wire configuration for monitored exhaust feedback
• Square connector shape for application-specific fitment
• 18 x 1.5 mm thread size
• Overall length: 360.0
• Includes oxygen sensor and instruction sheet
• Rear and rear left positions listed by application

Detailed Description

Delphi part number ES20216 is an emission control oxygen sensor engineered from more than a century of OE experience. Delphi’s background as a supplier to major automakers is reflected in the sensor’s application-focused design, helping maintain the correct signal response for rear exhaust monitoring. This part cross-references Bosch 15437 and DENSO Auto Parts 234-4326 for the same application.

Use ES20216 when servicing rear oxygen sensor locations on 2002 Nissan Sentra rear left, 2001 Nissan Sentra rear, 2001 Nissan Sentra rear left with California Emission System, 2000-2001 Nissan Sentra rear, 2000 INFINITI G20 rear, 2001 INFINITI G20 rear to 01/2001, and 2000 Nissan Altima rear. The Delphi ES20216 is built for vehicles that require a heated rear sensor with the specified connector and thread dimensions.

What It Helps Address

• Check engine light related to rear oxygen sensor performance
• Incorrect exhaust oxygen feedback from a worn sensor
• Slow sensor response after extended service life
• Emission control faults tied to rear sensor readings
• Rougher fuel control caused by inaccurate exhaust data

Installation Notes and Tips

Verify the position listed for your vehicle before ordering, since this part is specified for rear and rear left locations depending on application. Confirm connector shape, wire count, thread size, and overall length against the original sensor before installation. Follow the included instruction sheet and inspect the exhaust bung threads for damage or contamination before threading in the new sensor.

Quality Assurance

Delphi builds this oxygen sensor using OE heritage and application-specific engineering developed through long-term supplier experience with major automakers. That background supports consistent fitment and sensor performance for the listed Nissan and INFINITI applications.