HomeEmission Control > SensorsWalker 250-23095 Oxygen Sensor - Upstream Front
Part #: 250-23095

Walker 250-23095 Oxygen Sensor - Upstream Front

Walker Products OE, Upstream Front
2 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Products OE, Upstream Front
Fitment: Mazda, Millenia
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Overview of Walker 250-23095 Oxygen Sensor for Mazda Millenia

The Walker 250-23095 oxygen sensor is designed specifically for the Mazda Millenia, 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 Millenia models
  • Threaded mounting with 18.0 mm thread diameter
  • 17.24-inch wiring harness length with 3 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 250-23095 oxygen sensor from this line is engineered to provide consistent performance and durability, matching the exact requirements of the Mazda Millenia’s emission system.

Technical Description and Attributes

This oxygen sensor is a heated type, which allows it to reach operating temperature quickly for faster feedback to the engine control unit. It includes a 17.24-inch wiring harness with three 20-gauge wires, ensuring proper electrical conductivity and signal transmission. The sensor’s connector is a radiused polygon female type, designed to fit securely and prevent disconnections. The threaded mounting with an 18.0 mm diameter ensures a tight and leak-free installation. With an overall length of 20.79 inches, this sensor fits precisely in the designated location on the Mazda Millenia.

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
  • Improves fuel economy by enabling precise engine adjustments

Installation Notes and Tips

When installing the Walker 250-23095 oxygen sensor, ensure the engine is cool to avoid burns. Use the correct socket size for the 18.0 mm threaded sensor to prevent damage. Verify the connector’s radiused polygon female shape matches the vehicle harness before connecting. Avoid twisting or pulling on the wiring harness to maintain wire integrity. Proper torque specifications should be followed to secure the sensor without over-tightening.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable operation and longevity. While specific warranty details for part number 250-23095 may vary, Walker typically offers coverage against defects in materials and workmanship. Refer to product documentation for exact warranty terms.

BrandWalker
Part Number250-23095
PositionWalker Products OE, Upstream Front
Connector GenderFemale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length20.79
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity3
Wiring Harness Length17.24

This part fits 2 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1996MazdaMillenia2.5LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products OE
1995MazdaMillenia2.5LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; 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.