Walker 350-34294 Oxygen Sensor - Upstream

Walker 350-34294 Oxygen Sensor for Hyundai

Walker Products 350-34294 is a heated oxygen sensor built as an OE-style replacement for specific Hyundai applications. It is engineered for upstream placement and provides the ECU with the feedback needed to monitor air-fuel control on affected vehicles.

Key Features

• Heated oxygen sensor for upstream installation
• Specific fit design for targeted Hyundai applications
• 4-wire configuration with 20-gauge wiring
• Radiused polygon male connector for vehicle-specific connection
• Threaded mounting with 18.0 mm thread diameter
• Overall length: 11.34 in.; wiring harness length: 7.8 in.

Product Details

The Walker Products Aftermarket line focuses on engine management and oxygen/air-fuel sensors developed for OE replacement use. Part number 350-34294 is made for the correct application and upstream position, helping the vehicle’s diagnostic system receive the signal it expects from the sensor circuit. This part number is listed for 1997-2001 Hyundai Accent, 1998-2000 Hyundai Elantra, and 1998-2001 Hyundai Tiburon in upstream locations. If you are searching for a Hyundai Accent upstream oxygen sensor, Hyundai Elantra Bank 1 Sensor 1 oxygen sensor, or a Hyundai Tiburon front oxygen sensor, 350-34294 is the direct reference to review.

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

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor engine operation caused by incorrect air-fuel feedback
• Increased fuel consumption from a faulty upstream sensor
• Higher exhaust emissions from inaccurate sensor readings
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Confirm the vehicle’s year, model, and upstream position before ordering. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation, since damaged wiring can shorten sensor life and affect signal quality. Verify the threaded mounting location and connector style match the original part before final fitment.

Quality Assurance

Walker Products manufactures engine management sensors as OE-replacement components and operates as an Automotive ISO 9001/TS 16949 certified company. The 350-34294 oxygen sensor is built to support the diagnostic feedback required by the ECU on the listed Hyundai applications.