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Walker 250-54039 Oxygen Sensor - Upstream
Overview of Walker 250-54039 Oxygen Sensor for Mazda 6
The Walker 250-54039 oxygen sensor is designed specifically for Mazda 6 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.
- Heated oxygen sensor with 4 wires for accurate readings
- Specific fitment for Mazda 6 ensuring compatibility
- 22.17-inch wiring harness length for flexible installation
- Threaded mounting with 18.0 mm thread diameter
- Radiused polygon male connector for reliable connection
- Wire gauge measurement of 20 for durability and signal integrity
- Overall length of 25.71 inches for proper placement
Detailed Product Description
The Walker 250-54039 oxygen sensor is engineered to meet the exact specifications required by Mazda 6 vehicles. As a heated sensor, it quickly reaches operating temperature to provide accurate oxygen level readings, which are critical for optimal fuel mixture and emissions control. The sensor includes a 22.17-inch wiring harness and four wires with a 20-gauge measurement, ensuring reliable electrical performance. Its radiused polygon male connector and threaded mounting type with an 18.0 mm thread diameter allow for a secure and precise fit. The overall length of 25.71 inches accommodates proper sensor placement within the exhaust system.
Walker Products OE Brand Line
This oxygen sensor is part of the Walker Products OE line, which focuses on delivering original equipment quality parts designed to meet or exceed factory specifications. The Walker Products OE line ensures that each sensor, including the 250-54039, provides consistent performance and durability tailored to specific vehicle applications like the Mazda 6.
Common Applications and Issues Addressed
- Maintains proper air-fuel ratio for efficient engine operation
- Helps reduce harmful emissions by monitoring exhaust gases
- Prevents engine performance issues related to faulty oxygen sensors
- Supports smooth idling and acceleration by providing accurate sensor data
- Assists in avoiding check engine light triggers related to emission control
Installation Notes and Tips
When installing the Walker 250-54039 oxygen sensor on a Mazda 6, ensure the threaded mounting is properly tightened to the manufacturer’s torque specifications to avoid exhaust leaks. The radiused polygon male connector should be securely connected to the vehicle’s wiring harness to maintain signal integrity. It is recommended to inspect the wiring harness for any damage before installation and to use anti-seize compound on the threads if specified by the vehicle manufacturer.
Quality Assurance and Warranty
Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and longevity. The 250-54039 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 | 250-54039 |
| Position | Walker Products OE, Upstream |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 25.71 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 4 |
| Wiring Harness Length | 22.17 |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Submodel | Transmission | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 2008 | Mazda | 6 | Automatic | 2.3L | L4 | GAS | Upstream | Compatible with California-ESV vehicles, Upstream Oxygen Sensor; Walker Products OE | |
| 2008 | Mazda | 6 | Automatic | 2.3L | L4 | GAS | Upstream | California emissions ESV vehicles oxygen sensor; Walker Products OE | |
| 2007 | Mazda | 6 | Automatic | 2.3L | L4 | GAS | Upstream | Compatible with California-ESV vehicles, Upstream Oxygen Sensor; Walker Products OE | |
| 2007 | Mazda | 6 | Automatic | 2.3L | L4 | GAS | Upstream | California emissions ESV vehicles oxygen sensor; Walker Products OE | |
| 2006 | Mazda | 6 | i | Automatic | 2.3L | L4 | GAS | Upstream | Compatible with California-ESV vehicles, Upstream Oxygen Sensor; Walker Products OE |
| 2006 | Mazda | 6 | i | Automatic | 2.3L | L4 | GAS | Upstream | California emissions ESV vehicles oxygen sensor; Walker Products OE |
* 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.