OE Quality
60-Day Returns

Walker 350-34556 Oxygen Sensor - Upstream
Overview of Walker 350-34556 Oxygen Sensor for Hyundai and Kia
The Walker 350-34556 oxygen sensor is designed specifically for select Hyundai and Kia models, including the Elantra, Sportage, Tiburon, and Tucson. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.
- Heated sensor type for faster response times
- Specific fit for Hyundai Elantra, Kia Sportage, Tiburon, and Tucson
- 6.22-inch wiring harness length with 22-gauge wire
- Threaded mounting type with 18.0 mm thread diameter
- 4-wire configuration with a radiused polygon male connector
- Overall length of 9.76 inches for precise installation
Detailed Product Features and Specifications
This Walker oxygen sensor (part number 350-34556) features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 4-wire design supports both the sensor signal and heater circuit, ensuring reliable operation. The wiring harness length of 6.22 inches and 22-gauge wire provide durability and ease of connection. The sensor’s threaded mounting type with an 18.0 mm diameter ensures a secure fit in the exhaust system. The radiused polygon male connector is designed for a specific fit, preventing compatibility issues during installation.
Walker Products Aftermarket Line
The Walker Products Aftermarket line offers a range of emission control components engineered to meet or exceed OEM specifications. This oxygen sensor is part of that line, providing a direct replacement solution tailored for Hyundai and Kia vehicles. The focus on precise fitment and reliable sensor technology supports proper engine management and emissions compliance.
Common Applications and Issues Addressed
- Replacement for faulty or failing oxygen sensors in Hyundai Elantra and Kia Sportage
- Helps resolve rough idling and poor fuel economy caused by inaccurate oxygen readings
- Addresses check engine light triggers related to oxygen sensor faults
- Improves emissions system performance in Kia Tiburon and Hyundai Tucson
- Supports proper air-fuel mixture control for smoother engine operation
Installation Notes and Tips
When installing the Walker 350-34556 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector type matches the vehicle harness before installation. The 6.22-inch wiring harness length allows for straightforward routing without excessive tension. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper sensor operation.
Quality Assurance and Warranty
Walker oxygen sensors undergo rigorous testing to meet emission control standards and durability requirements. The 350-34556 sensor is manufactured to provide consistent performance and long service life. Warranty coverage details should be confirmed with the product documentation or supplier, ensuring confidence in the replacement part.
| Brand | Walker |
|---|---|
| Part Number | 350-34556 |
| Position | Walker Products Aftermarket, Upstream |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 9.76 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 22 |
| Wire Quantity | 4 |
| Wiring Harness Length | 6.22 |
This part fits 36 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2010 | Kia | Sportage | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2010 | Kia | Sportage | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2009 | Hyundai | Tucson | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2009 | Hyundai | Tucson | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2009 | Kia | Sportage | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2009 | Kia | Sportage | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2008 | Hyundai | Tucson | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2008 | Hyundai | Tucson | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2008 | Kia | Sportage | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2008 | Kia | Sportage | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2007 | Hyundai | Tucson | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2007 | Hyundai | Tucson | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2007 | Kia | Sportage | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2007 | Kia | Sportage | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2006 | Hyundai | Tiburon | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2006 | Hyundai | Tiburon | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2006 | Hyundai | Tucson | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2006 | Hyundai | Tucson | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2006 | Kia | Sportage | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2006 | Kia | Sportage | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2005 | Hyundai | Tiburon | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2005 | Hyundai | Tiburon | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2005 | Hyundai | Tucson | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2005 | Hyundai | Tucson | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2005 | Kia | Sportage | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2005 | Kia | Sportage | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2004 | Hyundai | Tiburon | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2004 | Hyundai | Tiburon | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2003 | Hyundai | Elantra | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2003 | Hyundai | Elantra | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2003 | Hyundai | Tiburon | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2003 | Hyundai | Tiburon | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2002 | Hyundai | Elantra | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2002 | Hyundai | Elantra | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 2001 | Hyundai | Elantra | 2.0L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2001 | Hyundai | Elantra | 2.0L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.