Delphi ES20067 Oxygen Sensor - Rear, Rear Left or Rear Right

Delphi ES20067 Oxygen Sensor Overview

The Delphi ES20067 is a heated oxygen sensor built for rear exhaust monitoring on select Mazda MPV applications. It uses a 4-wire design with a square connector and 18 x 1.5 mm thread size for a direct-fit replacement on the listed positions.

Backed by Delphi’s OE heritage and decades of supplier experience, this oxygen sensor is built with the same application knowledge used in original equipment development. It is a practical choice for Mazda MPV rear, rear left, and rear right sensor service where accurate exhaust feedback is needed.

Key Features

• Heated oxygen sensor for faster operating temperature
• 4-wire configuration
• Square connector shape
• 18 x 1.5 mm thread size
• Overall length: 660.0
• Package includes oxygen sensor and instruction sheet
• Position-specific coverage for rear, rear left, and rear right locations

Detailed Description

Delphi ES20067 is an emission control sensor for rear exhaust positions on Mazda MPV models. It is listed for 2002-2006 Mazda MPV rear right, 2002-2006 Mazda MPV rear left, 2000-2001 Mazda MPV rear right with California Emission System, and 1996-1998 Mazda MPV rear. This part number, ES20067, is also referenced in cross-application catalogs for the same vehicle coverage.

As a heated oxygen sensor, it is used to monitor exhaust oxygen content after the catalytic converter so the engine management system can evaluate emissions performance. The Delphi ES20067 is built around OE-based engineering knowledge and is intended for the specified Mazda MPV rear sensor locations.

This part cross-references Bosch (e.g., 13596, 15257) for the same application.

What It Helps Address

• Check engine light related to rear oxygen sensor performance
• Incorrect exhaust oxygen readings from a worn sensor
• Emission test failures tied to rear sensor faults
• Slow sensor response after warm-up
• Driveability issues caused by inaccurate fuel control feedback

Installation Notes and Tips

Confirm the exact sensor position on your Mazda MPV before ordering, since ES20067 is listed for rear, rear left, and rear right applications. Match the connector shape, thread size, and wire count to the original sensor before installation.

For best results, inspect the exhaust bung threads and wiring routing before installing the new sensor. Use the vehicle application details to verify whether your Mazda MPV requires the rear right, rear left, or rear position.

Quality Assurance

Delphi draws on more than 100 years of OE experience and supplier knowledge from work with major automakers. That OE background is reflected in the design and application coverage of ES20067 for Mazda MPV rear oxygen sensor service.