Delphi ES20170 Oxygen Sensor - Front

Delphi ES20170 Oxygen Sensor Overview

The Delphi ES20170 is a heated front oxygen sensor built for precise exhaust monitoring in select Hyundai and Kia applications. It draws on Delphi’s OE heritage and supplier experience, giving you an aftermarket replacement that follows the original sensor design and fitment requirements.

Compatible with 2001-2004 Hyundai Elantra, 2003-2006 Hyundai Tiburon, 2005-2009 Hyundai Tucson, and 2005-2010 Kia Sportage, front positions.

Key Features

• Heated oxygen sensor for faster operating temperature and stable signal output
• 4-wire design with square connector shape
• 18 x 1.5 mm thread size for direct-thread applications
• 220.0 overall length for OE-style routing and placement
• Front position sensor for listed Hyundai and Kia vehicles
• Package includes the oxygen sensor and instruction sheet

Detailed Description

The Delphi ES20170 oxygen sensor is engineered for front exhaust placement on select Hyundai Elantra, Hyundai Tiburon, Hyundai Tucson, and Kia Sportage models. As a heated sensor, it reaches operating temperature quickly, helping the engine control system monitor exhaust oxygen content and maintain accurate fuel control. Delphi’s OE background is reflected in the sensor construction, connector style, and thread specification, making this part a practical replacement for service work on the listed applications. This part number, ES20170, is also referenced in cross-application catalogs under Bosch 13565 for the same application.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Rough idle caused by inaccurate exhaust feedback
• Fuel trim concerns from a slow or failing front sensor
• Emissions test failures tied to sensor response issues
• Poor drivability from incorrect air-fuel mixture correction

Installation Notes and Tips

Verify the front sensor location before installation and confirm thread size, connector shape, and wire count against the original part. For fitment, use the exact vehicle listing: Fits 2005-2010 Kia Sportage, front; Fits 2005-2009 Hyundai Tucson, front; Fits 2003-2006 Hyundai Tiburon, front; Fits 2004 Hyundai Elantra, front without California Emission System; To 07/01/2003; Fits 2003 Hyundai Elantra, front without California Emission System; Fits 2001-2002 Hyundai Elantra, front. The ES20170 should be installed on the correct front exhaust location to ensure proper sensor readings.

Quality Assurance

Delphi builds this oxygen sensor using OE experience and supplier knowledge developed through work with major automakers. That OE-focused background supports consistent fit, connector design, and sensor construction for the listed Hyundai and Kia applications.