Delphi ES20079 Oxygen Sensor - Front or Rear

Delphi ES20079 Oxygen Sensor Overview

The Delphi ES20079 oxygen sensor is a heated replacement sensor built for precise exhaust monitoring and dependable engine management feedback. With OE-based engineering and a 4-wire design, it supports accurate air-fuel ratio control for select Mitsubishi and Dodge applications.

Compatible With 2003 Mitsubishi Outlander rear, 2000 Mitsubishi Eclipse rear, 1995-2000 Mitsubishi Mirage rear, 1994 Mitsubishi Mirage rear, 1993 Mitsubishi Mirage rear, and 1993-1994 Dodge Colt front with California Emission System.

Key Features

• Heated oxygen sensor for faster operating temperature and stable signal output
• 4-wire configuration with flat connector shape
• Thread size: 18 x 1.5 mm
• Overall length: 610.0
• Package includes the oxygen sensor and instruction sheet
• OE-focused design backed by Delphi’s long history supplying original equipment to major automakers

Detailed Description

Delphi ES20079 is an emission control sensor engineered for vehicles that rely on accurate exhaust oxygen readings to manage fuel delivery and emissions performance. This oxygen sensor is listed for front and rear positions, with the exact location determined by the vehicle application. It is a direct-fit style replacement for select Mitsubishi Outlander, Mitsubishi Eclipse, Mitsubishi Mirage, and Dodge Colt applications, including 2003 Mitsubishi Outlander rear and 1993-1994 Dodge Colt front with California Emission System. This part cross-references DENSO Auto Parts (e.g., 234-4639, 234-4641) for the same application.

What It Helps Address

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

Installation Notes and Tips

Verify the sensor position before ordering, since this part is used in both front and rear locations depending on the vehicle. Confirm thread size, connector shape, and wire count against the original sensor before installation. For best results, compare the vehicle application details with the application tab and inspect the harness routing and connector style before replacement.

Quality Assurance

Delphi builds this oxygen sensor using OE heritage and application knowledge developed through decades of original equipment supply. That background supports consistent fitment and dependable sensor performance for emission control service.