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Delphi ES10740 Oxygen Sensor - Front Left
| Brand | Delphi ES10740 |
|---|---|
| Position | Front Left |
| Connector Shape | Square |
| Overall Length | 500.0 |
| Package Contents | Oxygen Sensor, Instruction Sheet |
| Sensor Type | Heated |
| Thread Size | 18 x 1.5 mm |
| Wire Quantity | 4 |
| Fits | Mazda · 3 vehicles |
Heated sensor. Provides faster operation for responsive emissions monitoring.
Square connector. Simplifies installation with a straightforward electrical connection.
OE heritage. Built with decades of original-equipment experience.
Cross-references Bosch 15323, Bosch 15327 and DENSO Auto Parts 234-4041 for the same application. See all 13.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Delphi ES10740 Oxygen Sensor for Mazda 626
The Delphi ES10740 is a heated oxygen sensor built for precise exhaust feedback and OE-style replacement performance. It is a direct-fit option for select Mazda 626 applications, including front left placement on 1998-2000 models.
Key Features
- Heated oxygen sensor for faster operating temperature and stable signal output
- 4-wire design with a square connector shape
- 18 x 1.5 mm thread size for proper exhaust bung fitment
- 500.0 overall length for application-specific routing
- Includes oxygen sensor and instruction sheet
- Front left position for select Mazda 626 applications
Detailed Description
Delphi ES10740 is engineered from OE heritage and backed by more than a century of original-equipment experience. Delphi applies that background to aftermarket parts so the sensor delivers the fit, connector style, and signal characteristics expected in modern emission control service. This oxygen sensor is listed for 1998-1999 Mazda 626 front left and 2000 Mazda 626 front left without California Emission System, making it a focused replacement for the correct exhaust location. This part cross-references Bosch 15323 and DENSO Auto Parts 234-4041 for the same application.
What It Helps Solve
- Check engine light caused by a failing upstream oxygen sensor
- Incorrect air-fuel feedback affecting drivability
- Reduced fuel economy from slow or inaccurate sensor response
- Emission test failures related to sensor performance
- Rough idle or hesitation tied to exhaust mixture control
Installation Notes and Tips
Verify the front left sensor location before installation and confirm the vehicle is not equipped with the California Emission System on 2000 Mazda 626 applications. Match the 4-wire square connector and 18 x 1.5 mm thread size to the original sensor before removal. Inspect the harness routing and exhaust threads for damage, and follow the included instruction sheet during installation.
Quality Assurance
Delphi builds this oxygen sensor using OE experience and supplier knowledge developed through work with major automakers. The ES10740 is made to support accurate replacement service for Mazda 626 emission control repair.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2000 | Mazda | 626 | Front Left | without California Emission System |
| 1999 | Mazda | 626 | Front Left | — |
| 1998 | Mazda | 626 | Front Left | — |
| No rows match your filter. | ||||