HomeEmission Control > SensorsWalker 350-34556 Oxygen Sensor - Upstream
Part #: 350-34556

Walker 350-34556 Oxygen Sensor - Upstream

Walker Products Aftermarket, Upstream
36 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Products Aftermarket, Upstream
Fitment: Kia and Hyundai, Sportage, Tucson, Tiburon, and Elantra
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

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.

BrandWalker
Part Number350-34556
PositionWalker Products Aftermarket, Upstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length9.76
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement22
Wire Quantity4
Wiring Harness Length6.22

This part fits 36 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2010KiaSportage2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2010KiaSportage2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2009HyundaiTucson2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2009HyundaiTucson2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2009KiaSportage2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2009KiaSportage2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2008HyundaiTucson2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2008HyundaiTucson2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2008KiaSportage2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2008KiaSportage2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2007HyundaiTucson2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2007HyundaiTucson2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2007KiaSportage2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2007KiaSportage2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2006HyundaiTiburon2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2006HyundaiTiburon2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2006HyundaiTucson2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2006HyundaiTucson2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2006KiaSportage2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2006KiaSportage2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2005HyundaiTiburon2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2005HyundaiTiburon2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2005HyundaiTucson2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2005HyundaiTucson2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2005KiaSportage2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2005KiaSportage2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2004HyundaiTiburon2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2004HyundaiTiburon2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2003HyundaiElantra2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2003HyundaiElantra2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2003HyundaiTiburon2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2003HyundaiTiburon2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2002HyundaiElantra2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2002HyundaiElantra2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2001HyundaiElantra2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2001HyundaiElantra2.0LL4GASUpstreamFront 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.