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Walker 350-34065 Oxygen Sensor - Downstream
| Brand | Walker 350-34065 |
|---|---|
| Position | Downstream |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 27.68 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 4 |
| Wiring Harness Length | 24.13 |
| Product line | Walker Products Aftermarket |
| Fits | Mazda · 2 vehicles |
OE replacement. Engineered as an original-equipment-style sensor for the right diagnostic feedback.
Heated sensor. Helps the engine management system reach operating temperature faster.
Threaded mount. Installs with a secure, threaded connection.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Walker 350-34065 Oxygen Sensor for Mazda 6
Walker Products 350-34065 is a heated oxygen sensor built as a specific-fit replacement for the downstream position on select Mazda 6 models. It is engineered to provide the ECU with the feedback needed for proper fuel control and emissions monitoring on the affected application.
Key Features
- Specific-fit oxygen sensor for the downstream location
- Heated sensor design for faster operating temperature
- 4-wire configuration with 20-gauge wiring
- Threaded mounting with 18.0 mm thread diameter
- Radiused polygon male connector for application-specific connection
- Wiring harness length: 24.13 in.; overall length: 27.68 in.
Application Details
Walker Products Aftermarket focuses on OE-style engine management and oxygen/air-fuel sensors for exact application fitment. Part number 350-34065 is made for the downstream bank 1 sensor 2 position on 2006-2007 Mazda 6 models, where accurate exhaust feedback helps the ECU monitor catalyst and emissions performance. This Walker 350-34065 oxygen sensor is a direct-fit option for drivers searching for a 2006 Mazda 6 downstream oxygen sensor or a 2007 Mazda 6 bank 1 sensor 2 replacement.
This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.
Common Issues It May Address
- Check engine light related to oxygen sensor performance
- Poor fuel economy caused by incorrect exhaust feedback
- Rough engine operation from inaccurate sensor readings
- Increased exhaust emissions from a failing downstream sensor
- Stored ECU fault codes tied to the affected sensor circuit
Installation Notes and Tips
Verify the downstream bank 1 sensor 2 location before installation. Inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear, since damaged wiring can shorten sensor life and affect readings. Confirm thread size, connector shape, and harness length against the original part before replacement.
Quality Assurance
Walker Products states that its engine management sensors are developed as OEM replacement parts and manufactured under Automotive ISO 9001 / TS 16949 quality systems. Since 1946, the brand has supplied engine management and fuel system components for a wide range of vehicle applications.
| Year | Make | Model | Submodel | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2007 | Mazda | 6 | — | 2.3L | L4 | GAS | Downstream | Fits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket |
| 2006 | Mazda | 6 | Mazdaspeed | 2.3L | L4 | GAS | Downstream | Fits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket |
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