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Delphi ES10309 Oxygen Sensor - Rear Left or Rear Right
| Brand | Delphi ES10309 |
|---|---|
| Position | Rear Left |
| Connector Shape | Flat |
| Overall Length | 1705.0 |
| Package Contents | Oxygen Sensor, Instruction Sheet |
| Position(s) | Rear Left, Rear Right. 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 | Volkswagen and Audi · 30 vehicles |
Heated sensor. Helps the oxygen sensor reach operating temperature quickly.
Flat connector. Simplifies connection with a low-profile plug design.
OE heritage. Built with 100 years of OE experience and supplier knowledge.
Cross-references Bosch 13550, Bosch 13552 and DENSO Auto Parts 234-4661 for the same application. See all 19.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Delphi ES10309 Oxygen Sensor for Audi and Volkswagen
The Delphi ES10309 is a heated oxygen sensor built for rear left and rear right applications on select Audi and Volkswagen models. It uses a 4-wire design with a flat connector and 18 x 1.5 mm thread size, making it a direct-fit replacement for the specified rear sensor positions.
Key Features
- Heated oxygen sensor for faster operating response
- 4-wire configuration with flat connector shape
- 18 x 1.5 mm thread size
- 1705.0 overall length
- Includes oxygen sensor and instruction sheet
- Fits rear left and rear right positions where listed
OE-Style Design and Fitment
Delphi ES10309 is built from OE heritage and supplier experience developed over decades of original equipment service. That background is reflected in the sensor’s construction and application coverage for rear oxygen sensor replacement on 1996-1999 Audi A4, 1996-1999 Audi A4 Quattro, 1998-1999 Audi A6, 1998-1999 Audi A6 Quattro, and 1998-2000 Volkswagen Passat models. This part cross-references Bosch (e.g., 13550, 13552) for the same application.
What This Oxygen Sensor Helps Address
- Check engine light concerns related to rear oxygen sensor performance
- Incorrect exhaust feedback from a worn heated O2 sensor
- Emissions test failures tied to sensor response issues
- Fuel control problems caused by inaccurate exhaust readings
- Replacement needs for damaged or aging rear sensor wiring and connector ends
Installation Notes and Tips
Verify the vehicle’s application tab before ordering, since this part is position-specific for rear left and rear right locations. Confirm the 1705 mm overall length, connector shape, and thread size match the original sensor before installation. For best results, inspect the harness routing and exhaust threads during replacement on Audi A4, Audi A6, and Volkswagen Passat applications.
Quality Assurance
Delphi builds this oxygen sensor using OE experience and knowledge drawn from supplying major automakers, with aftermarket construction based on that original equipment background.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2000 | Volkswagen | Passat | Rear Right | with 1705mm Overall Length |
| 2000 | Volkswagen | Passat | Rear Left | with 1705mm Overall Length |
| 1999 | Audi | A4 | Rear Right | — |
| 1999 | Audi | A4 | Rear Left | — |
| 1999 | Audi | A4 Quattro | Rear Right | — |
| 1999 | Audi | A4 Quattro | Rear Left | — |
| 1999 | Audi | A6 | Rear Right | — |
| 1999 | Audi | A6 | Rear Left | — |
| 1999 | Audi | A6 Quattro | Rear Right | — |
| 1999 | Audi | A6 Quattro | Rear Left | — |
| 1999 | Volkswagen | Passat | Rear Right | — |
| 1999 | Volkswagen | Passat | Rear Left | — |
| 1998 | Audi | A4 | Rear Right | — |
| 1998 | Audi | A4 | Rear Left | — |
| 1998 | Audi | A4 Quattro | Rear Right | — |
| 1998 | Audi | A4 Quattro | Rear Left | — |
| 1998 | Audi | A6 | Rear Right | — |
| 1998 | Audi | A6 | Rear Left | — |
| 1998 | Audi | A6 Quattro | Rear Right | — |
| 1998 | Audi | A6 Quattro | Rear Left | — |
| 1998 | Volkswagen | Passat | Rear Right | — |
| 1998 | Volkswagen | Passat | Rear Left | — |
| 1997 | Audi | A4 | Rear Right | — |
| 1997 | Audi | A4 | Rear Left | — |
| 1997 | Audi | A4 Quattro | Rear Right | — |
| 1997 | Audi | A4 Quattro | Rear Left | — |
| 1996 | Audi | A4 | Rear Right | — |
| 1996 | Audi | A4 | Rear Left | — |
| 1996 | Audi | A4 Quattro | Rear Right | — |
| 1996 | Audi | A4 Quattro | Rear Left | — |
| No rows match your filter. | ||||