Delphi ES20228 Oxygen Sensor - Rear

Delphi ES20228 Rear Oxygen Sensor

Delphi ES20228 is a heated rear oxygen sensor built for precise exhaust monitoring on select Chrysler and Dodge applications. It uses a 4-wire design, square connector, and 18 x 1.5 mm thread size for direct-fit service on the listed vehicles.

Compatible with 2003 Chrysler PT Cruiser, rear, and 2003-2005 Dodge Neon, rear, this Delphi oxygen sensor supports accurate feedback from the exhaust stream. The ES20228 reflects Delphi’s OE heritage and decades of supplier experience in aftermarket emission control parts.

Key Features

• Heated oxygen sensor for faster operating response
• 4-wire configuration
• Square connector shape
• 18 x 1.5 mm thread size
• 300.0 overall length
• Rear position application
• Package contents: oxygen sensor and instruction sheet

Detailed Description

The Delphi ES20228 oxygen sensor is engineered for rear exhaust placement on the 2003 Chrysler PT Cruiser and 2003-2005 Dodge Neon. As a heated sensor, it helps maintain signal performance as exhaust temperatures change, supporting the vehicle’s emission monitoring system. Delphi’s OE background is built into the part design, drawing on long-term experience supplying original equipment to major automakers.

This part cross-references Bosch 13718 for the same application. If you are replacing a worn rear sensor on a Dodge Neon or Chrysler PT Cruiser, ES20228 provides the correct connector style, thread size, and wire count for the listed fitments.

What It Helps Address

• Check engine light related to rear oxygen sensor faults
• Incorrect exhaust oxygen readings
• Slow sensor response from a failing heated sensor
• Emission system diagnostic trouble codes
• Rough fuel control caused by inaccurate exhaust feedback

Installation Notes and Tips

Verify rear sensor placement, connector shape, and thread size before installation. Inspect the harness routing and connector condition during replacement, and confirm the exhaust bung threads are clean and undamaged. Use the vehicle’s service information for proper torque and wiring handling.

Quality Assurance

Delphi builds this ES20228 oxygen sensor with OE-focused engineering and aftermarket application knowledge. The part is backed by Delphi’s manufacturing experience and is intended to meet the fitment and functional requirements of the listed Chrysler PT Cruiser and Dodge Neon applications.