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Walker 350-34476 Oxygen Sensor - Downstream Front
| Brand | Walker 350-34476 |
|---|---|
| Position | Downstream Front |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 22.76 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 4 |
| Wiring Harness Length | 19.21 |
| Product line | Walker Products Aftermarket |
| Fits | Nissan · 2 vehicles |
OE replacement. Engineered as an original-equipment-style sensor for reliable diagnostic feedback.
Heated sensor. Helps the system reach operating temperature quickly for consistent performance.
Threaded mount. Installs with a secure threaded connection for a straightforward replacement.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Walker Oxygen Sensor for 2000 Nissan Maxima
Walker Products Part Number 350-34476 is a specific-fit heated oxygen sensor engineered for the downstream front position on the 2000 Nissan Maxima. It is built to deliver the ECU feedback needed for accurate fuel control and emissions monitoring.
Key Features
- Heated oxygen sensor for faster operating response
- Specific fit for the downstream front location
- 4-wire design with 20-gauge wiring
- Radiused polygon male connector for application-specific connection
- Threaded mounting with 18.0 mm thread diameter
- Wiring harness length: 19.21 in.; overall length: 22.76 in.
Product Details
Walker Products Aftermarket focuses on OE-style engine management and oxygen/air-fuel sensors built for defined vehicle applications. Part Number 350-34476 is matched to the 2000 Nissan Maxima downstream front sensor location, where it helps the engine control unit monitor exhaust oxygen content and adjust fueling strategy. This sensor is a direct replacement choice for drivers addressing emissions-related fault codes, poor fuel economy, rough running, or a malfunction indicator light tied to the oxygen sensor circuit.
This part cross-references standard oxygen sensor replacement applications where the same downstream front fitment is required.
Common Issues This Sensor Can Address
- Check engine light related to oxygen sensor performance
- Rich or lean fuel mixture concerns
- Reduced fuel economy from inaccurate exhaust feedback
- Higher exhaust emissions during inspection
- Poor engine response caused by a failing downstream sensor
Installation Notes and Tips
Fits 2000 Nissan Maxima, downstream front. Confirm the connector shape, thread diameter, and harness routing before installation. Inspect the sensor wiring harness and connector for heat damage, corrosion, or abrasion, since physical damage can shorten sensor life and affect signal quality. Verify the fault code and sensor location before replacement to ensure the correct downstream front unit is installed.
Quality Assurance
Walker Products has supplied engine management components since 1946 and manufactures sensors to application-specific fitment standards. The brand is ISO 9001/TS 16949 certified, with production focused on OE-style replacement performance for defined vehicle applications such as the 2000 Nissan Maxima.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2000 | Nissan | Maxima | 3.0L | V6 | GAS | Downstream Front | Non Calif-ESV No Calif-ESV Downstream Front; Walker Products Aftermarket |
| 2000 | Nissan | Maxima | 3.0L | V6 | GAS | Downstream Front | Non Calif-ESV; Downstream; Front; Walker Products Aftermarket |
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