OE Quality
60-Day Returns

Walker 350-34323 Oxygen Sensor - Downstream Left or Downstream Right
Overview of Walker Oxygen Sensor 350-34323 for Nissan Sentra
The Walker 350-34323 oxygen sensor is designed specifically for Nissan Sentra models, providing precise emission control and engine performance monitoring. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.
- Wiring harness length: 28.27 inches
- Wire gauge measurement: 20 gauge
- Heated sensor type for faster response
- Specific fit for Nissan Sentra
- Four-wire configuration
- Radiused polygon male connector
- Thread diameter: 18.0 mm
- Overall length: 31.81 inches
- Threaded mounting type for reliable attachment
Detailed Product Description
The Walker Products Aftermarket oxygen sensor 350-34323 is engineered to meet the exact specifications required for Nissan Sentra vehicles. This heated oxygen sensor uses a four-wire design, which includes two wires for the heating element and two for the sensor signal, ensuring quicker sensor activation and accurate air-fuel mixture readings. The 20-gauge wiring and 28.27-inch harness length provide sufficient reach and durability for proper installation. The radiused polygon male connector ensures a secure and precise connection to the vehicle’s wiring harness, while the 18.0 mm threaded mounting allows for straightforward replacement without modifications.
Walker Products Aftermarket is a dedicated product line focused on delivering reliable emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, offering Nissan Sentra owners a sensor designed for specific fitment and performance consistency.
Common Applications and Issues Addressed
- Restores accurate oxygen sensing for optimal engine performance
- Helps reduce vehicle emissions by providing precise air-fuel ratio data
- Resolves check engine light triggers related to oxygen sensor faults
- Improves fuel efficiency by ensuring proper combustion
- Prevents rough idling and engine hesitation caused by faulty sensors
Installation Notes and Tips
- Ensure the vehicle is cool before sensor removal to avoid burns
- Use appropriate oxygen sensor socket for threaded mounting
- Verify connector type matches the vehicle harness (radiused polygon male)
- Do not over-tighten the sensor; follow torque specifications
- Inspect wiring harness for damage before installation
Quality Assurance and Warranty
Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards, ensuring durability and reliable performance. The 350-34323 part number undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the product documentation or supplier.
| Brand | Walker |
|---|---|
| Part Number | 350-34323 |
| Position | Walker Products Aftermarket, Downstream Left |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 31.81 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 4 |
| Wiring Harness Length | 28.27 |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2001 | Nissan | Sentra | XE | 1.8L | L4 | GAS | Downstream Left | Exc. CA Series, w/o Mid Year Emissions; Downstream; Left; Walker Products Aftermarket |
| 2001 | Nissan | Sentra | GXE | 1.8L | L4 | GAS | Downstream Left | Exc. CA Series, w/o Mid Year Emissions; Downstream; Left; Walker Products Aftermarket |
| 2001 | Nissan | Sentra | XE | 1.8L | L4 | GAS | Downstream Left | Downstream Oxygen Sensor for models excluding CA Series with no Mid Year Emissions, positioned on the left side.; Walker Products Aftermarket |
| 2001 | Nissan | Sentra | GXE | 1.8L | L4 | GAS | Downstream Left | Downstream Oxygen Sensor for models excluding CA Series with no Mid Year Emissions, positioned on the left side.; Walker Products Aftermarket |
| 2000 | Nissan | Sentra | 1.8L | L4 | GAS | Downstream Right | Downstream Right Oxygen Sensor, non-CA series; Walker Products Aftermarket | |
| 2000 | Nissan | Sentra | 1.8L | L4 | GAS | Downstream Left | Non CA series; No serie de California; Downstream; Left; Walker Products Aftermarket | |
| 2000 | Nissan | Sentra | 1.8L | L4 | GAS | Downstream Right | Non California emissions; downstream position on the right side; Walker Products Aftermarket | |
| 2000 | Nissan | Sentra | 1.8L | L4 | GAS | Downstream Left | Non CA SERIES Downstream Left Oxygen Sensor; 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.