HomeEmission Control > SensorsDelphi ES20171 Oxygen Sensor - Front or Rear
Part #: ES20171

Delphi ES20171 Oxygen Sensor - Front or Rear

Rear
9 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Suzuki and Kia, Forenza, Reno, and Spectra
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Delphi ES20171 Heated Oxygen Sensor Overview

The Delphi ES20171 is a heated oxygen sensor designed for precise emission control in select Kia and Suzuki vehicles. Engineered to meet OEM specifications, this sensor helps maintain optimal engine performance and reduce harmful emissions.

  • Heated sensor type for faster warm-up and accurate readings
  • 4-wire design ensuring reliable electrical connections
  • Square connector shape for secure fitment
  • Thread size of 18 x 1.5 mm compatible with specific vehicle ports
  • Overall length of 550.0 mm for proper installation
  • Includes oxygen sensor and instruction sheet for guidance
  • Compatible with front and rear positions depending on vehicle requirements

Technical Details and Compatibility

The Delphi ES20171 oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving fuel efficiency and emission accuracy. Its 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. The square connector shape and 18 x 1.5 mm thread size are designed to fit precisely in the exhaust system of Kia Forenza and Suzuki Spectra models. The 550 mm overall length accommodates proper placement in either front or rear positions, depending on your vehicle's specific setup.

Applications and Problem Resolution

This oxygen sensor is used to monitor the oxygen levels in the exhaust gases, providing critical data to the engine control unit (ECU) for air-fuel mixture adjustments. Installing the Delphi ES20171 can help address issues such as:

  • Check engine light triggered by faulty oxygen sensor readings
  • Poor fuel economy due to incorrect air-fuel mixture
  • Increased emissions failing regulatory standards
  • Engine hesitation or rough idling caused by sensor malfunction
  • Failed emissions tests related to sensor performance

Installation Notes and Tips

When installing the Delphi ES20171 oxygen sensor, ensure the vehicle is cooled down to avoid burns. Use the correct socket size for the 18 x 1.5 mm thread to prevent damage. Verify the sensor position (front or rear) according to your Kia Forenza or Suzuki Spectra model specifications. Connect the 4-wire harness securely to the square connector to maintain proper electrical contact. Follow the included instruction sheet for detailed installation guidance.

Quality Assurance and Warranty

Delphi manufactures the ES20171 oxygen sensor to meet strict quality standards, ensuring durability and reliable performance. This part is backed by Delphi's warranty coverage, providing confidence in its longevity and function when installed correctly in compatible Kia Forenza and Suzuki Spectra vehicles.

BrandDelphi
Part NumberES20171
Connector ShapeSquare
Overall Length550.0
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 9 vehicles. Search below:

YearMakeModelPositionNotes
2008SuzukiForenzaRear
2007SuzukiForenzaRear
2006SuzukiForenzaRear
2004KiaSpectraRear
2004KiaSpectraFront
2003KiaSpectraRear
2003KiaSpectraFront
2002KiaSpectraRearFrom 05/22/2001
2002KiaSpectraFrontFrom 05/22/2001

* 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:

0K2NA-18-8610K2NB-18-861156-4311156431564418213-85Z20234-4423234-4858250-2444725192256105S35235S4210OS2326SG1493SU4562SU6197

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