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Delphi ES20068 Oxygen Sensor - Front or Rear
| Brand | Delphi ES20068 |
|---|---|
| Position | Rear |
| Connector Shape | Square |
| Overall Length | 450.0 |
| Package Contents | Oxygen Sensor, Instruction Sheet |
| Position(s) | Front, Rear. For the position specific to your vehicle, refer to the Application tab. |
| Sensor Type | Heated |
| Thread Size | 18 x 1.5 mm |
| Wire Quantity | 4 |
| Fits | Mazda · 20 vehicles |
Heated sensor. Delivers faster operation for quicker emissions monitoring.
Square connector. Simplifies hookup with a straightforward plug-in design.
OE heritage. Built from 100 years of OE experience and supplier knowledge.
Cross-references Bosch 13595, Bosch 15043 and DENSO Auto Parts 234-4142 for the same application. See all 31.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Delphi ES20068 Oxygen Sensor Overview
The Delphi ES20068 is a heated oxygen sensor built for precise exhaust monitoring and reliable replacement performance. It is a direct-fit option for select Mazda RX-8 and Mazda MPV applications, with OE-based engineering informed by Delphi’s long history supplying original equipment to major automakers.
Compatible With 2004-2011 Mazda RX-8 rear, 2004-2008 Mazda RX-8 front, and 1996-1998 Mazda MPV rear applications. The Delphi ES20068 uses a 4-wire heated design, a square connector, and an 18 x 1.5 mm thread size for application-specific replacement service.
Key Features
- Heated oxygen sensor for exhaust feedback and emissions system monitoring
- 4-wire configuration for common OE-style signal and heater circuit layouts
- Square connector shape for vehicle-specific harness connection
- 18 x 1.5 mm thread size for direct-thread installation
- Overall length: 450.0
- Package contents: oxygen sensor and instruction sheet
- Position-specific coverage for front and rear applications
Detailed Description
Delphi ES20068 is engineered as an OE-style replacement oxygen sensor for Mazda RX-8 and Mazda MPV fitments. It supports exhaust oxygen measurement used by the engine control system to manage fuel delivery and emissions performance. Delphi’s OE heritage and supplier experience are reflected in the sensor’s construction and application coverage, making it a practical choice for restoring proper sensor response on the listed vehicles.
This part cross-references Bosch 13595 and DENSO Auto Parts 234-4142 for the same application. Search terms such as Mazda RX-8 rear oxygen sensor, Mazda RX-8 front O2 sensor, and Mazda MPV rear heated oxygen sensor align with this part’s confirmed fitment.
What It Helps Address
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel mixture readings
- Reduced fuel control accuracy from a slow or aging sensor
- Emissions test failures tied to sensor response issues
- Driveability concerns caused by faulty exhaust feedback
Installation Notes and Tips
Verify the sensor position before ordering, since this part is listed for front and rear locations depending on the vehicle application. Confirm connector shape, thread size, and wire count against the original sensor before installation. Use the included instruction sheet and follow proper exhaust sensor removal procedures to avoid damage to the harness or threads.
Quality Assurance
Delphi builds aftermarket parts using OE experience and knowledge developed through decades of original equipment supply. The ES20068 reflects that background with application-specific fitment and sensor construction for the listed Mazda vehicles.
| Year | Make | Model | Submodel | Drive Type | Transmission | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2011 | Mazda | RX-8 | — | — | — | Rear | — |
| 2010 | Mazda | RX-8 | — | — | — | Rear | — |
| 2009 | Mazda | RX-8 | — | — | — | Rear | — |
| 2008 | Mazda | RX-8 | Touring | — | — | Rear | — |
| 2008 | Mazda | RX-8 | Touring | — | Manual | Front | — |
| 2008 | Mazda | RX-8 | Sport | — | — | Rear | — |
| 2008 | Mazda | RX-8 | Sport | — | Manual | Front | — |
| 2008 | Mazda | RX-8 | Grand Touring | — | — | Rear | — |
| 2008 | Mazda | RX-8 | Grand Touring | — | Manual | Front | — |
| 2007 | Mazda | RX-8 | — | — | — | Rear | — |
| 2007 | Mazda | RX-8 | — | — | Manual | Front | — |
| 2006 | Mazda | RX-8 | — | — | — | Rear | — |
| 2006 | Mazda | RX-8 | — | — | Manual | Front | — |
| 2005 | Mazda | RX-8 | — | — | — | Rear | — |
| 2005 | Mazda | RX-8 | — | — | Manual | Front | — |
| 2004 | Mazda | RX-8 | — | — | — | Rear | — |
| 2004 | Mazda | RX-8 | — | — | Manual | Front | — |
| 1998 | Mazda | MPV | — | RWD | — | Rear | — |
| 1997 | Mazda | MPV | — | RWD | — | Rear | — |
| 1996 | Mazda | MPV | — | RWD | — | Rear | — |
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