Delphi ES20048 Oxygen Sensor - Rear

Delphi ES20048 Heated Oxygen Sensor Overview

The Delphi ES20048 is a heated oxygen sensor designed for rear position installation in select Chrysler, Dodge, and Plymouth vehicles. This sensor helps maintain optimal engine performance and emissions control by accurately monitoring oxygen levels in the exhaust system.

• Heated sensor type for faster response times
• 4-wire configuration ensuring reliable signal transmission
• Round connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with specified vehicles
• Overall length of 305.0 mm for precise installation
• Includes oxygen sensor and instruction sheet for installation guidance

Detailed Product Description

The Delphi ES20048 oxygen sensor is engineered to meet the specific requirements of rear exhaust systems in Chrysler, Dodge, and Plymouth models such as the Caravan, Grand Caravan, Grand Voyager, Neon, Town & Country, and Voyager. Its heated sensor design allows the unit to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 4-wire setup supports both the sensor signal and heater circuit, ensuring consistent performance under various driving conditions. The round connector shape and 18 x 1.5 mm thread size provide a secure and direct fit, minimizing installation issues. With an overall length of 305.0 mm, this sensor fits precisely in the designated rear position, maintaining the integrity of the vehicle’s emission control system.

Common Applications and Issues Addressed

• Helps resolve poor fuel economy caused by inaccurate oxygen readings
• Reduces rough idling and engine hesitation related to faulty sensors
• Prevents increased emissions and failed emissions tests
• Addresses check engine light triggers linked to oxygen sensor faults
• Supports proper catalytic converter function by providing accurate data

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate tools to avoid damaging the 18 x 1.5 mm thread
• Verify the round connector matches the vehicle harness before installation
• Follow the included instruction sheet for torque specifications and wiring
• Clear any diagnostic trouble codes after installation to reset the system

Quality Assurance and Warranty

Delphi oxygen sensors, including the ES20048, are manufactured to meet OEM standards for durability and performance. This sensor undergoes rigorous testing to ensure reliable operation in emission control systems. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship to support long-term vehicle operation.