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Delphi ES20122 Oxygen Sensor - Front, Front Left or Rear
| Brand | Delphi ES20122 |
|---|---|
| Position | Front |
| Connector Shape | Square |
| Overall Length | 465.0 |
| Package Contents | Oxygen Sensor, Instruction Sheet |
| Position(s) | Front, Front Left, 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 |
| Fits | Mazda · 9 vehicles |
Heated sensor. Built for faster operation and stable readings.
Square connector. Simplifies hookup with a clean, secure fit.
OE heritage. Backed by 100 years of OE experience.
Cross-references Bosch 13887, Bosch 13967 and Bosch 15266 for the same application. See all 29.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Delphi ES20122 Oxygen Sensor Overview
Delphi ES20122 is a heated oxygen sensor built for precise exhaust monitoring and OE-style replacement performance. Backed by Delphi’s century of original equipment experience, it brings application-specific engineering to select Mazda vehicles, including Miata, MPV, Protege, and 626 fitments.
- Heated oxygen sensor for faster operating temperature
- 4-wire design
- Square connector shape
- 18 x 1.5 mm thread size
- Overall length: 465.0
- Includes oxygen sensor and instruction sheet
- Position-specific coverage for front, front left, and rear applications
Vehicle Fitment and Application
Compatible With 2004-2005 Mazda Miata, front; 2000-2001 Mazda MPV, front left; 2001 Mazda Protege, front; 1999-2000 Mazda Protege, front with California Emission System; and 1998-1999 Mazda 626, rear with California Emission System. This Delphi ES20122 oxygen sensor is a direct-fit option for drivers searching for a Mazda Miata oxygen sensor, Mazda Protege front oxygen sensor, or Mazda 626 rear oxygen sensor by part number ES20122.
This part cross-references Bosch 13887 and DENSO Auto Parts 234-4041 for the same application.
What It Helps Address
- Check engine light concerns related to oxygen sensor performance
- Incorrect air-fuel mixture readings
- Reduced fuel economy caused by inaccurate exhaust feedback
- Emission system faults on California Emission System applications
- Slow sensor response during cold starts
Installation Notes and Tips
Verify the sensor position on your vehicle before ordering, since ES20122 is used in front, front left, and rear locations depending on application. Confirm the connector style, 4-wire configuration, and 18 x 1.5 mm thread size before installation. Use the vehicle application details to match the correct Mazda Miata, Mazda MPV, Mazda Protege, or Mazda 626 placement.
Quality Assurance
Delphi builds this oxygen sensor using OE heritage and technical knowledge developed through long-term supply relationships with major automakers. That background supports consistent fitment and dependable sensor construction for the listed Mazda applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2005 | Mazda | Miata | Front | — |
| 2004 | Mazda | Miata | Front | — |
| 2001 | Mazda | MPV | Front Left | — |
| 2001 | Mazda | Protege | Front | — |
| 2000 | Mazda | MPV | Front Left | — |
| 2000 | Mazda | Protege | Front | with California Emission System |
| 1999 | Mazda | 626 | Rear | with California Emission System |
| 1999 | Mazda | Protege | Front | with California Emission System |
| 1998 | Mazda | 626 | Rear | with California Emission System |
| No rows match your filter. | ||||