Walker 350-34035 Oxygen Sensor - Downstream or Upstream

Walker 350-34035 Oxygen Sensor for Kia Spectra

Walker Products 350-34035 is a heated oxygen sensor built as a direct-fit OE-style replacement for select Kia Spectra applications. It is engineered for specific mounting positions and ECU feedback requirements, helping restore accurate exhaust monitoring on 2002-2004 Kia Spectra models.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for the correct Kia Spectra application
• 4-wire configuration with 22-gauge wiring
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for proper harness connection
• Wiring harness length: 19.21 in.; overall length: 22.76 in.

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors engineered to match original equipment fitment and diagnostic feedback needs. Part number 350-34035 is designed for select 2002-2004 Kia Spectra upstream and downstream positions, including Bank 1 Sensor 1 and Bank 1 Sensor 2 applications listed in the fitment data. If you are replacing a Kia Spectra oxygen sensor to address a check engine light, poor fuel economy, or elevated emissions, this sensor provides the correct threaded, heated, specific-fit configuration for the application.

This part cross-references no listed interchange numbers in the provided data.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel feedback to the ECU
• Poor fuel economy caused by a failing sensor
• Higher exhaust emissions from inaccurate exhaust readings
• Rough engine operation tied to sensor signal issues

Installation Notes and Tips

• Verify the vehicle build date and sensor position before ordering; fitment includes 2002 Kia Spectra models from 05/22/01 and specific upstream/downstream listings.
• Inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear before installation.
• Confirm the correct Bank 1 Sensor 1 or Bank 1 Sensor 2 location on the vehicle.
• Use the threaded mounting point and connector style specified for the application to ensure proper installation.

Quality Assurance

Walker Products states that its engine management sensors are developed for OE replacement use and manufactured under Automotive ISO9001/TS 16949 certification standards. Since 1946, the brand has supplied engine management and fuel system components for vehicle applications worldwide.