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Walker 350-34326 Oxygen Sensor - Downstream or Upstream
| Brand | Walker 350-34326 |
|---|---|
| Position | Downstream |
| Connector Gender | Female |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 19.8 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 4 |
| Wiring Harness Length | 16.26 |
| Product line | Walker Products Aftermarket |
| Fits | Saturn · 5 vehicles |
OE replacement. Engineered as an original-equipment-style sensor for reliable diagnostic feedback.
Heated sensor. Helps the engine management system respond quickly and accurately.
Threaded mount. Installs with a secure, direct-fit connection.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Walker Oxygen Sensor for OE Replacement
Walker Products Part Number 350-34326 is a heated oxygen sensor built for specific vehicle applications and ECU feedback requirements. It is engineered as an OE-style replacement for select Chevrolet Cruze and Saturn Astra models, with fitment matched to the sensor position and connector design.
Key Features
- Heated oxygen sensor for precise exhaust monitoring
- Specific fit application with threaded mounting
- 4-wire design with female radiused polygon connector
- 18.0 mm thread diameter for the listed applications
- 16.26 in. wiring harness length and 20-gauge wire
- Overall length: 19.8 in.
Product Details
Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed for OE replacement use. Part number 350-34326 is designed to provide the diagnostic feedback the ECU expects from the affected sensor location. This matters on modern vehicles where a failing sensor can trigger fault codes, rough running, higher fuel use, increased emissions, or a malfunction indicator light. For 2016 Chevrolet Cruze downstream service and 2008-2009 Saturn Astra upstream or downstream applications, this sensor is matched to the listed position and connector style.
Walker Products has supplied engine management and fuel system components since 1946 and operates under Automotive ISO9001/TS 16949 certification. This part cross-references no listed interchange numbers in the provided data.
What It Helps Address
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel feedback to the ECU
- Rough engine operation caused by a failing sensor
- Increased fuel consumption from inaccurate exhaust readings
- Elevated exhaust emissions from sensor degradation
Installation Notes and Tips
Confirm the sensor position before ordering: this listing covers downstream on the 2016 Chevrolet Cruze and upstream or downstream positions on select 2008-2009 Saturn Astra models. Inspect the sensor, wiring harness, and connector for heat damage, abrasion, or corrosion before installation. Threaded mounting and the specified connector shape should be verified against the original part to ensure proper ECU feedback after replacement.
Quality Assurance
Walker Products manufactures this oxygen sensor as an OE replacement part for the listed applications and backs its engine management product line with ISO9001/TS 16949 quality systems.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2016 | Chevrolet | Cruze | 1.8L | L4 | — | Downstream | OE Replacement |
| 2009 | Saturn | Astra | 1.8L | L4 | — | Upstream | OE Replacement |
| 2008 | Saturn | Astra | 1.8L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 2008 | Saturn | Astra | 1.8L | L4 | GAS | Downstream | Fits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket |
| 2008 | Saturn | Astra | 1.8L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
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