Delphi ES20225 Oxygen Sensor - Front or Front Right

Delphi Heated Oxygen Sensor ES20225

Delphi ES20225 is a heated oxygen sensor built for precise exhaust monitoring and OE-style replacement performance. It is a direct-fit option for select Mitsubishi Montero, Montero Sport, and Lancer applications, including front right and front positions where specified.

Key Features

• Heated oxygen sensor for faster operating temperature and stable signal output
• 4-wire design with square connector shape
• 18 x 1.5 mm thread size for application-specific exhaust mounting
• Overall length: 755.0
• Includes oxygen sensor and instruction sheet
• OE heritage backed by Delphi’s 100 years of OE experience

Detailed Description

Delphi ES20225 is engineered for vehicles that rely on accurate oxygen sensor feedback to manage air-fuel ratio and emissions control. Delphi draws on OE supplier experience to build aftermarket parts with the same application knowledge used by top automakers, making this sensor a practical replacement for worn or failing units on Mitsubishi Montero, Mitsubishi Montero Sport, and Mitsubishi Lancer models. This part cross-references Bosch (e.g., 15589, 15600) for the same application.

Compatible With 2001-2006 Mitsubishi Montero, front right; 2003-2005 Mitsubishi Lancer, front; 2001-2004 Mitsubishi Montero Sport, front right; and 1999-2000 Mitsubishi Montero Sport, front right with California Emission System. Use the application tab to confirm the exact position for your vehicle before ordering.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture readings
• Reduced fuel control from a slow or aging sensor
• Emissions test failures tied to sensor output
• Rough running caused by inaccurate exhaust feedback

Installation Notes and Tips

• Confirm the correct position: front, front right, or rear right as listed for the vehicle
• Verify connector shape, wire count, and thread size before installation
• Inspect the exhaust bung threads and sensor harness routing before fitting
• Follow the included instruction sheet and vehicle service information for proper installation

Quality Assurance

Delphi builds this oxygen sensor using OE heritage and application knowledge developed through decades of supplying major automakers. The ES20225 is designed as an aftermarket replacement that reflects that OE-focused engineering approach.