HomeEmission Control > SensorsDelphi ES20068 Oxygen Sensor - Front or Rear
Part #: ES20068

Delphi ES20068 Oxygen Sensor - Front or Rear

Rear
20 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Mazda, RX-8 and MPV
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Delphi ES20068 Oxygen Sensor Overview

The Delphi ES20068 is a heated oxygen sensor designed for precise emission control in Mazda vehicles. Specifically compatible with Mazda MPV and RX-8 models, this sensor helps maintain optimal engine performance and emissions compliance.

  • Heated sensor type for faster warm-up and accurate readings
  • 4-wire configuration ensuring reliable electrical connections
  • Square connector shape for secure fitment
  • Thread size of 18 x 1.5 mm for direct replacement
  • Overall length of 450.0 mm suitable for front and rear positions
  • Includes oxygen sensor and instruction sheet for installation guidance

Technical Details and Compatibility

The Delphi ES20068 oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. Its 4-wire setup supports both the sensor signal and heater circuit, ensuring consistent performance. The square connector shape and 18 x 1.5 mm thread size provide a precise fit for Mazda MPV and RX-8 models. With an overall length of 450 mm, this sensor fits front and rear positions depending on your vehicle's specific requirements. Refer to your vehicle’s service manual to confirm the correct sensor location.

Common Applications and Problem Resolution

  • Helps correct inaccurate air-fuel mixture readings
  • Reduces engine misfires caused by faulty oxygen sensors
  • Improves catalytic converter efficiency by providing accurate data
  • Resolves check engine light triggers related to oxygen sensor faults
  • Supports emission system compliance for Mazda MPV and RX-8

Installation Notes and Tips

Before installation, ensure the engine is cool to avoid burns. Disconnect the battery to prevent electrical shorts. Use the included instruction sheet for guidance on sensor location and wiring connections. Apply anti-seize compound to the sensor threads if recommended by your vehicle’s service manual. Tighten the sensor to the specified torque to avoid damage. Verify the connector is securely attached to prevent signal loss.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM specifications, ensuring reliable performance and durability. The ES20068 part number undergoes rigorous testing for accuracy and longevity. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship. Consult your purchase documentation for exact warranty terms.

BrandDelphi
Part NumberES20068
Connector ShapeSquare
Overall Length450.0
Package ContentsOxygen Sensor, Instruction Sheet
Position(s)Front, Rear. For the position specific to your vehicle, refer to the Application tab.
Sensor TypeHeated
Thread Size18 x 1.5 mm
Wire Quantity4

This part fits 20 vehicles. Search below:

YearMakeModelSubmodelDrive TypeTransmissionPositionNotes
2011MazdaRX-8Rear
2010MazdaRX-8Rear
2009MazdaRX-8Rear
2008MazdaRX-8TouringRear
2008MazdaRX-8TouringManualFront
2008MazdaRX-8SportRear
2008MazdaRX-8SportManualFront
2008MazdaRX-8Grand TouringRear
2008MazdaRX-8Grand TouringManualFront
2007MazdaRX-8Rear
2007MazdaRX-8ManualFront
2006MazdaRX-8Rear
2006MazdaRX-8ManualFront
2005MazdaRX-8Rear
2005MazdaRX-8ManualFront
2004MazdaRX-8Rear
2004MazdaRX-8ManualFront
1998MazdaMPVRWDRear
1997MazdaMPVRWDRear
1996MazdaMPVRWDRear

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1359513772138-61315042150432131411213141222506234-4142234-4349234-9102250-540312502413125673JE96-18-61AJE96-18-861JE96-18-861AJE96-18-861A9UN3H2-18-861BN3H2-18-861CN3H2-18-861C9UN3H3-18-861AN3H3-18-861BN3H3-18-861B9UN3H3-18-8G1AOS1070REA1597SG1664SG1667SG980SU4596

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.