OE Quality
60-Day Returns

Walker 250-24369 Oxygen Sensor - Downstream or Upstream Front
Overview of Walker 250-24369 Oxygen Sensor for Mazda 626
The Walker 250-24369 oxygen sensor is designed specifically for the Mazda 626, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon female connector for secure installation.
- Heated oxygen sensor for accurate emissions monitoring
- Specific fit for Mazda 626 models
- Threaded mounting with 18.0 mm thread diameter
- 17.24 inches wiring harness length with 4 wires of 20 gauge
- Radiused polygon female connector for reliable connection
- Overall length of 20.79 inches for proper fitment
Walker Products OE Brand Line Details
The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. The 250-24369 oxygen sensor is part of this line, providing a direct replacement solution engineered to maintain the emission control system's integrity on the Mazda 626.
Product Features and Specifications
This oxygen sensor is a heated type, which allows it to reach operating temperature quickly for accurate readings. It includes a 4-wire configuration with 20 gauge wires, ensuring proper signal transmission and heater function. The wiring harness length of 17.24 inches and overall length of 20.79 inches are designed to match the Mazda 626’s factory setup. The sensor mounts via a threaded connection with an 18.0 mm diameter, and the connector features a radiused polygon female design to ensure a secure and precise fit.
Common Applications and Issues Addressed
- Helps maintain proper air-fuel mixture for efficient combustion
- Reduces harmful emissions by providing accurate oxygen level data
- Prevents engine performance issues related to faulty sensors
- Resolves check engine light triggers caused by oxygen sensor faults
- Supports smooth engine idling and acceleration in Mazda 626 vehicles
Installation Notes and Tips
When installing the Walker 250-24369 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. Confirm the connector’s radiused polygon female shape matches the vehicle’s harness for a secure connection. Thread the sensor carefully to avoid cross-threading and torque to manufacturer specifications.
Quality Assurance and Warranty
Walker Products OE oxygen sensors are manufactured to meet original equipment standards, ensuring reliable performance and durability. This part number 250-24369 undergoes rigorous quality control to comply with emission regulations. Warranty details are provided by the manufacturer and typically cover defects in materials and workmanship.
| Brand | Walker |
|---|---|
| Part Number | 250-24369 |
| Position | Walker Products OE, Upstream Front |
| Connector Gender | Female |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 20.79 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 4 |
| Wiring Harness Length | 17.24 |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2000 | Mazda | 626 | 2.5L | V6 | GAS | Upstream Front | Non-Calif-ESV No Calif-ESV Upstream Front; Walker Products OE |
| 2000 | Mazda | 626 | 2.5L | V6 | GAS | Upstream Front | Fits non-California emissions vehicles upstream of catalytic converter.; Walker Products OE |
| 1999 | Mazda | 626 | 2.5L | V6 | GAS | Upstream Front | Front upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products OE |
| 1999 | Mazda | 626 | 2.0L | L4 | GAS | Downstream | Downstream oxygen sensor for B1S2 position in California emissions.; Walker Products OE |
| 1999 | Mazda | 626 | 2.0L | L4 | GAS | Downstream | Downstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products OE |
| 1998 | Mazda | 626 | 2.5L | V6 | GAS | Upstream Front | Front upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products OE |
| 1998 | Mazda | 626 | 2.0L | L4 | GAS | Downstream | Downstream oxygen sensor for B1S2 position in California emissions.; Walker Products OE |
| 1998 | Mazda | 626 | 2.0L | L4 | GAS | Downstream | Downstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; 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.