Delphi ES20181 Oxygen Sensor - Front, Front Left, Rear or Rear Right

Delphi ES20181 Heated Oxygen Sensor Overview

The Delphi ES20181 is a heated oxygen sensor designed for precise emission control in various vehicle models. Engineered with a 4-wire configuration and a square connector shape, this sensor ensures accurate readings and reliable performance for compatible Chrysler, Dodge, Jeep, Mercedes-Benz, Smart, and Volkswagen vehicles.

• Heated oxygen sensor with 4-wire design for efficient operation
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with multiple vehicle models
• Overall length of 475.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Position-specific fitment: front, front left, rear, rear right

Technical Details and Compatibility

The Delphi ES20181 oxygen sensor features a heated sensor type that allows for faster warm-up times and improved fuel mixture readings. Its 4-wire design supports both sensor heating and signal transmission, enhancing sensor responsiveness and durability. The square connector shape ensures a secure electrical connection, reducing the risk of disconnection or signal loss. With a thread size of 18 x 1.5 mm and an overall length of 475.0 mm, this sensor fits precisely in designated mounting locations.

This oxygen sensor is compatible with a range of vehicles including Chrysler Caliber, Caravan, Grand Caravan, Pacifica, and Town & Country; Dodge Caliber and Caravan; Jeep Wrangler; Mercedes-Benz models such as C63 AMG, C230, C280, C300, C350, CLK63 AMG, CLK350, CLK550, CLS550, E350, E550, GL450, GL550, GLK350, ML350, ML550, R350, Routan, S550, SL63 AMG, SL550, SLK280, SLK300, SLK350; Smart Fortwo; and Volkswagen models. The sensor is designed for position-specific installation at front, front left, rear, and rear right locations, ensuring optimal emission control.

Common Applications and Problem Resolution

• Helps maintain proper air-fuel ratio for efficient engine performance
• Reduces harmful emissions by providing accurate oxygen level data
• Addresses issues such as rough idling and poor fuel economy
• Prevents check engine light triggers related to oxygen sensor faults
• Supports smooth engine operation and compliance with emission standards

Installation Notes and Tips

When installing the Delphi ES20181 oxygen sensor, ensure the vehicle is cooled down to avoid burns. Use the correct thread size (18 x 1.5 mm) to avoid cross-threading. The sensor’s 4-wire connector with a square shape must be securely connected to prevent signal interruptions. Follow the included instruction sheet carefully for position-specific installation, whether front, front left, rear, or rear right. It is recommended to use anti-seize compound on the threads to facilitate future removal.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM specifications, ensuring reliable performance and durability. The ES20181 part number undergoes rigorous testing to comply with emission control standards. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship. Refer to the product documentation for exact warranty terms.