NTK 25162 Oxygen Sensor - Downstream Left or Downstream Right

NTK Direct Fit Oxygen Sensor for Hyundai and Kia

The NTK Direct Fit Oxygen Sensor, part number 25162, is a heated, specific-fit replacement built for downstream applications on select Hyundai and Kia vehicles. It is engineered with a 4-wire design, 18 mm thread diameter, and a 28.25 in. wiring harness for OE-style fitment and signal performance.

NTK’s Direct Fit Oxygen Sensor line focuses on streamlined coverage and OE application support for import and domestic vehicles. As part of the NGK family of products, NTK uses controlled ceramic manufacturing and extensive testing to deliver fit, form, and function that align with original equipment requirements.

Key Features

• Part number 25162 direct fit oxygen sensor
• Heated sensor design for downstream exhaust monitoring
• Specific-fit application for select Hyundai Santa Fe, Hyundai XG350, and Kia Amanti models
• 4-wire configuration with threaded mounting
• 28.25 in. wiring harness length
• 18 mm thread diameter
• Built to meet OE specification targets through manufacturing validation

Detailed Description

NTK 25162 is a direct replacement oxygen sensor for downstream left and downstream right positions on select 2003-2006 Hyundai Santa Fe, 2003-2006 Hyundai XG350, and 2004-2006 Kia Amanti applications. This sensor is designed for vehicles that require a heated, threaded oxygen sensor with a specific-fit harness and OE-style connector layout. If you are replacing a downstream oxygen sensor on a Hyundai Santa Fe, Hyundai XG350, or Kia Amanti, this NTK part number 25162 provides the correct application match for the listed positions.

This part cross-references Bosch 13773 and DENSO Auto Parts 234-4166 for the same application.

What It Helps Address

• Check engine light related to downstream oxygen sensor faults
• Incorrect air-fuel feedback from a worn sensor
• Slow sensor response caused by age or contamination
• Emissions test failures tied to oxygen sensor performance
• Driveability issues linked to inaccurate exhaust oxygen readings

Installation Notes and Tips

Confirm the vehicle’s downstream left or downstream right position before ordering. Verify the 4-wire layout, 18 mm thread diameter, and harness length against the original sensor before installation. For 2003 Hyundai XG350 applications, confirm the 2/03 build date note listed in the fitment data. Use proper exhaust sensor removal practices to avoid damaging the threads or wiring.

Quality Assurance

NTK manufactures oxygen sensors with controlled ceramic technology and tests them during production to help ensure reliability and OE-level performance targets. The brand is recognized as a major original equipment oxygen sensor supplier, and this part is built to support the listed Hyundai and Kia applications.