OE Quality
60-Day Returns

Walker 350-34375 Oxygen Sensor - Downstream Rear or Upstream Left
Overview of Walker 350-34375 Oxygen Sensor
The Walker 350-34375 oxygen sensor is designed specifically for select Hyundai and Kia models, including the Azera, Cadenza, Genesis Coupe, and Sedona. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.
- Heated oxygen sensor with 4-wire design for precise readings
- Specific fit for Hyundai and Kia vehicles: Azera, Cadenza, Genesis Coupe, Sedona
- 28.07-inch wiring harness length for flexible installation
- Threaded mounting type with 18.0 mm thread diameter
- Radiused polygon male connector for secure electrical connection
- Wire gauge measurement of 20 for durability and signal integrity
- Overall length of 31.61 inches to accommodate vehicle-specific routing
Walker Products Aftermarket Line Details
This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing reliable emission control components tailored to specific vehicle applications. The line emphasizes precise fitment and quality construction, ensuring compatibility and performance for Hyundai and Kia models requiring exact sensor specifications.
Product Features and Specifications
The Walker 350-34375 oxygen sensor features a heated sensor type that allows for faster warm-up times and improved sensor response. Its 4-wire configuration supports both the sensor signal and heater circuit, enhancing accuracy and durability. The wiring harness length of 28.07 inches and overall length of 31.61 inches provide sufficient reach for proper installation without modification. The sensor mounts via a threaded connection with an 18.0 mm diameter, ensuring a secure fit in the exhaust system. The radiused polygon male connector is designed for a precise and reliable electrical connection, reducing the risk of signal loss or disconnection. The 20-gauge wire measurement balances flexibility and strength for long-term use.
Applications and Common Issues Addressed
- Restores accurate oxygen sensing for improved fuel efficiency
- Helps resolve check engine light codes related to oxygen sensor failure
- Reduces emissions by providing correct air-fuel mixture data
- Improves engine performance and drivability in Hyundai Azera, Kia Cadenza, Genesis Coupe, and Sedona
- Prevents rough idling and poor acceleration caused by faulty sensors
Installation Notes and Tips
When installing the Walker 350-34375 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. Route the wiring harness carefully to prevent contact with hot exhaust components or moving parts. Tighten the sensor to manufacturer torque specifications to ensure a proper seal and sensor function.
Quality Assurance and Warranty
Walker Products Aftermarket oxygen sensors undergo rigorous testing to meet OEM standards for fit, form, and function. The 350-34375 part number is manufactured to provide consistent performance and durability in emission control applications. While specific warranty details are not provided here, Walker typically offers limited warranties covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.
| Brand | Walker |
| Part Number | 350-34375 |
| Position | Walker Products Aftermarket, Downstream Rear |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 31.61 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 4 |
| Wiring Harness Length | 28.07 |
This part fits 19 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2018 | Kia | Sedona | 3.3L | V6 | Downstream Rear | OE Replacement | ||
| 2017 | Hyundai | Azera | 3.3L | V6 | Downstream Rear | OE Replacement | ||
| 2017 | Kia | Sedona | 3.3L | V6 | Downstream Rear | OE Replacement | ||
| 2016 | Hyundai | Azera | 3.3L | V6 | Downstream Rear | OE Replacement | ||
| 2016 | Kia | Cadenza | Premium | 3.3L | V6 | GAS | Downstream Rear | Rear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket |
| 2016 | Kia | Cadenza | Limited | 3.3L | V6 | GAS | Downstream Rear | Rear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket |
| 2016 | Kia | Cadenza | Base | 3.3L | V6 | GAS | Downstream Rear | Rear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket |
| 2016 | Kia | Sedona | 3.3L | V6 | Downstream Rear | OE Replacement | ||
| 2015 | Hyundai | Azera | 3.3L | V6 | Downstream Rear | OE Replacement | ||
| 2015 | Kia | Cadenza | Premium | 3.3L | V6 | GAS | Downstream Rear | Rear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket |
| 2015 | Kia | Cadenza | Limited | 3.3L | V6 | GAS | Downstream Rear | Rear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket |
| 2015 | Kia | Sedona | 3.3L | V6 | Downstream Rear | OE Replacement | ||
| 2014 | Hyundai | Azera | 3.3L | V6 | GAS | Downstream Rear | Rear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket | |
| 2014 | Hyundai | Genesis Coupe | 3.8L | V6 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products Aftermarket | |
| 2014 | Kia | Cadenza | 3.3L | V6 | GAS | Downstream Rear | Rear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket | |
| 2014 | Kia | Sedona | 3.5L | V6 | GAS | Downstream Rear | Rear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket | |
| 2013 | Hyundai | Azera | 3.3L | V6 | GAS | Downstream Rear | Rear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket | |
| 2013 | Hyundai | Genesis Coupe | 3.8L | V6 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products Aftermarket | |
| 2012 | Hyundai | Azera | 3.3L | V6 | GAS | Downstream Rear | Rear downstream oxygen sensor must be installed in correct position.; 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.