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Delphi ES20116 Oxygen Sensor - Rear
| Brand | Delphi ES20116 |
|---|---|
| Position | Rear |
| Connector Shape | Square |
| Overall Length | 760.0 |
| Package Contents | Oxygen Sensor, Instruction Sheet |
| Sensor Type | Heated |
| Thread Size | 18 x 1.5 mm |
| Wire Quantity | 4 |
| Fits | Chevrolet, Pontiac, and Saturn · 48 vehicles |
Heated sensor. Delivers faster operation for dependable emissions monitoring.
Square connector. Simplifies installation with a straightforward electrical connection.
OE heritage. Built with decades of original-equipment experience.
Cross-references Bosch 15897, DENSO Auto Parts 234-4066 and Dorman - HELP 15892 for the same application. See all 22.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Delphi ES20116 Rear Oxygen Sensor
The Delphi ES20116 is a heated rear oxygen sensor built for direct-fit replacement on select Chevrolet, Pontiac, and Saturn applications. It uses a 4-wire design, square connector shape, and 18 x 1.5 mm thread size for the specified rear position.
Key Features
- Heated oxygen sensor for rear exhaust monitoring
- 4-wire configuration with square connector shape
- 18 x 1.5 mm thread size
- Overall length: 760.0
- Package contents: oxygen sensor and instruction sheet
- OE heritage backed by Delphi’s 100 years of OE experience
Application Details
Compatible with rear-position applications on 2006-2011 Chevrolet HHR, 2005-2010 Chevrolet Cobalt, 2007-2009 Pontiac G5, 2005-2007 Saturn Ion, 2002-2007 Saturn Vue, 2004 Saturn L300, 2002-2003 Saturn L200, 2002-2003 Saturn LW200, 2002 Saturn L100, 2000-2002 Saturn SC1, 2000-2002 Saturn SC2, 2000-2002 Saturn SL, 2000-2002 Saturn SL1, 2000-2002 Saturn SL2, and 2000-2001 Saturn SW2. This part cross-references Bosch 15897 and DENSO Auto Parts 234-4066 for the same application. Delphi ES20116 is a direct replacement choice when servicing rear oxygen sensor circuits on Chevrolet HHR, Chevrolet Cobalt, and Saturn platforms.
What This Sensor Helps Address
- Check engine light related to rear oxygen sensor performance
- Incorrect exhaust oxygen readings at the rear sensor location
- Slow sensor response from a worn heated O2 sensor
- Fuel control issues caused by inaccurate exhaust feedback
- Emissions test failures tied to sensor malfunction
Installation Notes and Tips
Verify connector shape, wire count, thread size, and rear position before installation. Inspect the exhaust bung threads and wiring routing during replacement, and confirm the sensor lead length matches the vehicle layout. Use the included instruction sheet for application-specific guidance.
Quality Assurance
Delphi builds this oxygen sensor with OE experience and supplier knowledge developed through work with major automakers. That OE heritage is reflected in the design and application coverage of the ES20116.
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2011 | Chevrolet | HHR | — | Rear | — |
| 2010 | Chevrolet | Cobalt | — | Rear | — |
| 2010 | Chevrolet | HHR | — | Rear | — |
| 2009 | Chevrolet | Cobalt | — | Rear | — |
| 2009 | Chevrolet | HHR | — | Rear | — |
| 2009 | Pontiac | G5 | — | Rear | — |
| 2008 | Chevrolet | Cobalt | — | Rear | — |
| 2008 | Chevrolet | HHR | — | Rear | — |
| 2008 | Pontiac | G5 | — | Rear | — |
| 2007 | Chevrolet | Cobalt | — | Rear | — |
| 2007 | Chevrolet | HHR | LT | Rear | — |
| 2007 | Chevrolet | HHR | LS | Rear | — |
| 2007 | Pontiac | G5 | — | Rear | — |
| 2007 | Saturn | Ion | — | Rear | — |
| 2007 | Saturn | Vue | — | Rear | — |
| 2006 | Chevrolet | Cobalt | — | Rear | — |
| 2006 | Chevrolet | HHR | — | Rear | — |
| 2006 | Saturn | Ion | — | Rear | — |
| 2006 | Saturn | Vue | — | Rear | — |
| 2005 | Chevrolet | Cobalt | — | Rear | — |
| 2005 | Saturn | Ion | — | Rear | — |
| 2005 | Saturn | Vue | — | Rear | — |
| 2004 | Saturn | L300 | — | Rear | — |
| 2004 | Saturn | Vue | — | Rear | — |
| 2003 | Saturn | L200 | — | Rear | — |
| 2003 | Saturn | LW200 | — | Rear | — |
| 2003 | Saturn | Vue | — | Rear | — |
| 2002 | Saturn | L100 | — | Rear | — |
| 2002 | Saturn | L200 | — | Rear | — |
| 2002 | Saturn | LW200 | — | Rear | — |
| 2002 | Saturn | SC1 | — | Rear | — |
| 2002 | Saturn | SC2 | — | Rear | — |
| 2002 | Saturn | SL | — | Rear | — |
| 2002 | Saturn | SL1 | — | Rear | — |
| 2002 | Saturn | SL2 | — | Rear | — |
| 2002 | Saturn | Vue | — | Rear | — |
| 2001 | Saturn | SC1 | — | Rear | — |
| 2001 | Saturn | SC2 | — | Rear | — |
| 2001 | Saturn | SL | — | Rear | — |
| 2001 | Saturn | SL1 | — | Rear | — |
| 2001 | Saturn | SL2 | — | Rear | — |
| 2001 | Saturn | SW2 | — | Rear | — |
| 2000 | Saturn | SC1 | — | Rear | — |
| 2000 | Saturn | SC2 | — | Rear | — |
| 2000 | Saturn | SL | — | Rear | — |
| 2000 | Saturn | SL1 | — | Rear | — |
| 2000 | Saturn | SL2 | — | Rear | — |
| 2000 | Saturn | SW2 | — | Rear | — |
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