OE Quality
60-Day Returns

Delphi ES20324 Oxygen Sensor - Front or Rear
Delphi ES20324 Heated Oxygen Sensor Overview
The Delphi ES20324 is a heated oxygen sensor designed for precise emission control in select Lexus and Toyota vehicles. Engineered with a 4-wire configuration and a square connector, this sensor ensures accurate air-fuel mixture readings for optimal engine performance.
- Heated oxygen sensor with 4 wires for reliable operation
- Square connector shape for secure and proper fitment
- Thread size of 18 x 1.5 mm compatible with specified models
- Overall length of 750.0 mm for correct installation depth
- Includes oxygen sensor and instruction sheet for installation guidance
- Compatible with front and rear positions depending on vehicle requirements
Technical Details and Compatibility
The Delphi ES20324 oxygen sensor is engineered to meet the emission control needs of Lexus and Toyota vehicles, including the Camry, ES300, LS400, and Solara models. Its heated sensor type allows for faster activation and improved sensor response times, which is critical for maintaining efficient engine operation and reducing 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 errors. With an overall length of 750.0 mm, this sensor is designed to reach the correct position in the exhaust system for accurate readings.
Common Applications and Problem Resolution
- Helps resolve issues related to poor fuel economy caused by incorrect air-fuel mixture readings
- Addresses engine performance problems such as rough idling or hesitation
- Reduces emissions by providing accurate oxygen level data to the engine control unit
- Prevents check engine light triggers related to oxygen sensor faults
- Supports compliance with emission regulations for compatible Lexus and Toyota models
Installation Notes and Tips
When installing the Delphi ES20324 oxygen sensor, ensure the vehicle is compatible by verifying the make and model, specifically Lexus Camry, ES300, LS400, or Toyota Solara. The sensor can be installed in either front or rear positions depending on the vehicle’s configuration; consult the vehicle’s service manual for position-specific guidance. Use proper tools to avoid damaging the 18 x 1.5 mm threaded fitting and ensure the square connector is securely attached to prevent electrical issues. Follow the included instruction sheet carefully to maintain sensor integrity and performance.
Quality Assurance and Warranty
Delphi manufactures the ES20324 oxygen sensor to meet OEM standards for durability and accuracy. This part undergoes rigorous testing to ensure reliable operation in emission control systems. While specific warranty details may vary, Delphi typically offers coverage against manufacturing defects. Refer to the product documentation or contact the supplier for exact warranty terms related to this oxygen sensor.
| Brand | Delphi |
|---|---|
| Part Number | ES20324 |
| Connector Shape | Square |
| Overall Length | 750.0 |
| Package Contents | Oxygen Sensor, Instruction Sheet |
| Position(s) | Front, Rear. 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 27 vehicles. Search below:
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2006 | Toyota | Camry | Rear | with California Emission System | |
| 2005 | Toyota | Camry | Rear | with California Emission System | |
| 2004 | Toyota | Camry | Rear | with California Emission System | |
| 2003 | Toyota | Camry | Rear | with California Emission System | |
| 2003 | Toyota | Solara | Rear | ||
| 2002 | Toyota | Solara | Rear | ||
| 2001 | Lexus | ES300 | Rear | ||
| 2001 | Toyota | Camry | Rear | ||
| 2001 | Toyota | Solara | Rear | ||
| 2001 | Toyota | Solara | Front | without California Emission System | |
| 2000 | Lexus | ES300 | Rear | ||
| 2000 | Lexus | LS400 | Rear | ||
| 2000 | Toyota | Camry | Rear | ||
| 2000 | Toyota | Solara | Rear | ||
| 1999 | Lexus | ES300 | Rear | ||
| 1999 | Lexus | LS400 | Rear | ||
| 1999 | Toyota | Camry | Rear | ||
| 1999 | Toyota | Solara | Rear | ||
| 1998 | Lexus | ES300 | Rear | ||
| 1998 | Lexus | LS400 | Rear | ||
| 1998 | Toyota | Camry | Rear | ||
| 1997 | Lexus | ES300 | Rear | ||
| 1997 | Lexus | LS400 | Rear | ||
| 1997 | Toyota | Camry | Rear | ||
| 1996 | Lexus | LS400 | Rear | ||
| 1995 | Lexus | LS400 | Rear | ||
| 1992 | Toyota | Camry | XLE | Rear |
* 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.