Delphi ES20146 Oxygen Sensor

Delphi ES20146 Oxygen Sensor Overview

The Delphi ES20146 is a heated oxygen sensor built for precise exhaust monitoring and reliable replacement service. It draws on Delphi’s OE heritage and decades of supplier experience, making it a strong choice for drivers servicing emissions systems on vehicles such as the Mitsubishi 3000GT, Mitsubishi Mirage, Dodge Stealth, Chevrolet Aveo, and Pontiac G3.

With a 4-wire design, square connector, and 18 x 1.5 mm thread size, this oxygen sensor is built for direct-fit replacement in the correct application. The Delphi ES20146 is used in front, rear, left, and right positions depending on vehicle configuration.

Key Features

• Heated oxygen sensor for faster operating temperature and stable exhaust feedback
• 4-wire construction for application-specific emissions system use
• Square connector shape for proper harness connection
• 18 x 1.5 mm thread size for direct-thread installation
• Overall length: 480.0
• Package contents: oxygen sensor and instruction sheet
• Fits multiple positions including front, rear, left, and right, depending on vehicle application

Detailed Description

Delphi ES20146 is an OE-style oxygen sensor engineered for vehicles that rely on accurate air-fuel feedback to manage emissions and engine performance. Delphi’s 100 years of OE experience is reflected in the sensor’s application-specific design and manufacturing approach. This part cross-references DENSO Auto Parts 234-4298 and Walker Products 250-24630 for the same application. For fitment-specific service, this sensor is listed for rear applications on 2009-2011 Chevrolet Aveo and Aveo5, rear on 2009-2010 Pontiac G3, and multiple Mitsubishi and Dodge applications including Mitsubishi 3000GT, Mirage, Diamante, Montero, and Dodge Stealth.

What It Helps Address

• Faulty oxygen sensor readings that trigger check engine lights
• Incorrect fuel mixture caused by aging exhaust feedback components
• Reduced emissions-system performance during closed-loop operation
• Slow sensor response from worn heated sensor elements
• Driveability issues tied to inaccurate exhaust oxygen measurement

Installation Notes and Tips

• Confirm the exact position before ordering; this part is listed for front, rear, front left, rear left, rear right, right, and left positions depending on vehicle.
• Verify thread size and connector shape against the original sensor before installation.
• Use the vehicle application tab to match the correct fitment for your year, make, model, and position.
• Inspect the harness and connector for heat damage or corrosion before connecting the new sensor.

Quality Assurance

Delphi builds aftermarket parts using OE heritage and supplier knowledge developed through long-term work with major automakers. That background supports consistent fitment and application-focused design for emissions control service.