OE Quality
60-Day Returns

Delphi ES10323 Oxygen Sensor - Front or Rear
Delphi ES10323 Oxygen Sensor Overview
The Delphi ES10323 oxygen sensor is designed for precise emission control in select Geo and Toyota vehicles. This non-heated sensor features a 2-wire design and a square connector shape, ensuring reliable performance in models like the Toyota Corolla and Geo Prizm.
- Non-heated oxygen sensor type for accurate air-fuel mixture readings
- 2-wire configuration compatible with specific vehicle systems
- Square connector shape for secure and proper fitment
- Thread size of 18 x 1.5 mm for direct replacement
- Overall length of 480.0 mm to match factory specifications
- 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 ES10323 oxygen sensor is engineered to meet the emission control needs of Geo and Toyota vehicles, including the Celica, Corolla, MR2, and Prizm models. Its non-heated sensor type uses a 2-wire setup, which is typical for certain engine management systems. The square connector shape ensures a proper electrical connection, while the 18 x 1.5 mm thread size allows for straightforward installation without modification. With an overall length of 480 mm, this sensor fits the designated mounting points accurately, whether installed in the front or rear position as specified by your vehicle's requirements.
Common Applications and Problem Resolution
- Helps maintain optimal air-fuel ratio for efficient engine performance
- Reduces harmful emissions by providing accurate oxygen level data
- Addresses check engine light triggers related to oxygen sensor faults
- Improves fuel economy by enabling precise fuel mixture adjustments
- Prevents engine hesitation and rough idling caused by faulty sensors
Installation Notes and Tips
Before installation, verify the sensor position (front or rear) specific to your Geo or Toyota model. Use the included instruction sheet for guidance on proper torque and connector engagement. Ensure the engine is cool to avoid injury and damage to the sensor. It is recommended to use anti-seize compound on the threads to facilitate future removal. Confirm electrical connections are secure and free of corrosion to maintain sensor functionality.
Quality Assurance and Warranty
Delphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES10323 part number undergoes rigorous testing to ensure reliable operation under various driving conditions. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship, providing confidence in the sensor's longevity and effectiveness.
| Brand | Delphi |
|---|---|
| Part Number | ES10323 |
| Connector Shape | Square |
| Overall Length | 480.0 |
| Package Contents | Oxygen Sensor, Instruction Sheet |
| Position(s) | Front, Rear. For the position specific to your vehicle, refer to the Application tab. |
| Sensor Type | Non Heated |
| Thread Size | 18 x 1.5 mm |
| Wire Quantity | 2 |
This part fits 12 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1997 | Geo | Prizm | Front | with 480mm Overall Length |
| 1997 | Toyota | Corolla | Front | with 480mm Overall Length |
| 1996 | Geo | Prizm | Front | with 480mm Overall Length |
| 1996 | Toyota | Corolla | Front | with 480mm Overall Length |
| 1995 | Geo | Prizm | Front | with 480mm Overall Length |
| 1995 | Toyota | Corolla | Front | with 480mm Overall Length |
| 1995 | Toyota | MR2 | Rear | with 480mm Overall Length |
| 1994 | Toyota | MR2 | Rear | with 480mm Overall Length |
| 1993 | Toyota | Celica | Rear | with 480mm Overall Length; with California Emission System |
| 1993 | Toyota | MR2 | Rear | with 480mm Overall Length |
| 1992 | Toyota | Celica | Rear | with 480mm Overall Length; with California Emission System |
| 1992 | Toyota | MR2 | Rear | with 480mm Overall Length; From 01/1992 |
* 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.