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Delphi ES20206 Oxygen Sensor - Front or Front Left
Delphi ES20206 Heated Oxygen Sensor Overview
The Delphi ES20206 oxygen sensor is designed specifically for Jeep Grand Cherokee and Liberty models, providing accurate emissions control and engine performance monitoring. This heated oxygen sensor features a 4-wire design and a square connector shape to ensure reliable fitment and operation.
- Heated oxygen sensor for improved response time
- 4-wire configuration for precise signal transmission
- Square connector shape for secure electrical connection
- Thread size of 18 x 1.5 mm for proper installation
- Overall length of 270.0 mm to match factory specifications
- Includes oxygen sensor and instruction sheet
- Positioned for front or front left installation on compatible Jeep models
Detailed Product Description
The Delphi ES20206 oxygen sensor is engineered to meet the specific requirements of Jeep Grand Cherokee and Liberty vehicles. Its heated sensor type allows for faster warm-up times, which helps the engine control unit (ECU) maintain optimal air-fuel mixture and reduce emissions. The 4-wire design supports both the sensor signal and heater circuit, ensuring consistent performance under various driving conditions. The square connector shape and 18 x 1.5 mm thread size provide a secure and precise fit, minimizing installation issues. With an overall length of 270.0 mm, this sensor aligns with factory dimensions for seamless replacement.
Common Applications and Issues Addressed
- Helps maintain proper air-fuel ratio for efficient combustion
- Reduces engine misfires and rough idling caused by faulty sensors
- Supports emission system compliance by monitoring exhaust gases
- Prevents check engine light triggers related to oxygen sensor faults
- Improves fuel economy by providing accurate feedback to the ECU
Installation Notes and Tips
- Ensure vehicle compatibility with Jeep Grand Cherokee or Liberty models before installation
- Locate the sensor position at the front or front left exhaust manifold as specified
- Use proper tools to avoid damaging the 18 x 1.5 mm threaded fitting
- Follow the included instruction sheet for wiring and connector details
- Verify sensor connector is securely attached to prevent signal loss
Quality Assurance and Warranty
Delphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES20206 part number 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 use in Jeep Grand Cherokee and Liberty vehicles.
| Brand | Delphi |
|---|---|
| Part Number | ES20206 |
| Connector Shape | Square |
| Overall Length | 270.0 |
| Package Contents | Oxygen Sensor, Instruction Sheet |
| Position(s) | Front, Front Left. For the position specific to your vehicle, refer to the Application tab. |
| Sensor Type | Heated |
| Thread Size | 18 x 1.5 mm |
| Wire Quantity | 4 |
This part fits 4 vehicles. Search below:
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2003 | Jeep | Liberty | Front Left | ||
| 2002 | Jeep | Liberty | Sport | Front Left | |
| 2002 | Jeep | Liberty | Limited | Front Left | |
| 2001 | Jeep | Grand Cherokee | Front | without California Emission System; For Cylinders 4 to 6 Only |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.