Delphi ES20019 Oxygen Sensor

Delphi ES20019 Oxygen Sensor Overview

The Delphi ES20019 is a heated oxygen sensor built for front-position applications on select Mitsubishi, Plymouth, Hyundai, and Dodge vehicles. It combines a 4-wire design, round connector, and 18 x 1.5 mm thread size for OE-style replacement service.

Built from Delphi’s OE heritage and decades of supplier experience, this oxygen sensor reflects the same engineering knowledge used in original equipment development. The ES20019 is a direct-fit option for drivers searching for a front oxygen sensor for a 1990-1994 Mitsubishi Eclipse, 1990-1994 Plymouth Laser, or other listed applications.

Key Features

• Heated oxygen sensor for faster operating temperature response
• 4-wire configuration for the listed vehicle applications
• Round connector shape for OE-style electrical connection
• 18 x 1.5 mm thread size
• 755.0 overall length for listed fitments
• Front position application
• Includes oxygen sensor and instruction sheet

Detailed Description

Delphi ES20019 is an emission control oxygen sensor engineered for front sensor locations on select import vehicles. It is listed for 1990-1994 Mitsubishi Eclipse, 1990-1994 Plymouth Laser, 1990-1993 Hyundai Sonata, 1989-1992 Mitsubishi Galant, 1991-1992 Mitsubishi Mirage, 1989 Mitsubishi Mirage, and 1989 Dodge Colt with 755 mm overall length. If you are replacing a front oxygen sensor on a Mitsubishi Eclipse, Plymouth Laser, or Hyundai Sonata, this part number provides the specified connector, thread, and wire configuration needed for the application.

This part cross-references Bosch 12053 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture readings
• Reduced fuel economy caused by a failing front sensor
• Slow sensor response during closed-loop operation
• Emission test failures tied to sensor output issues

Installation Notes and Tips

Confirm the vehicle uses a front oxygen sensor location and 755 mm overall length before ordering. Match the 4-wire layout, round connector, and 18 x 1.5 mm thread size to the original part. Inspect the harness routing and connector condition during replacement, and follow the included instruction sheet for installation guidance.

Quality Assurance

Delphi draws on more than 100 years of OE experience and supplier knowledge from work with major automakers. That OE background is built into the ES20019 design for consistent fit and function in the listed applications.