HomeEmission Control > SensorsWalker 250-24369 Oxygen Sensor - Downstream or Upstream Front
Part #: 250-24369

Walker 250-24369 Oxygen Sensor - Downstream or Upstream Front

Walker Products OE, Upstream Front
8 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$61.29Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Products OE, Upstream Front
Fitment: Mazda, 626
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

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.

BrandWalker
Part Number250-24369
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 Quantity4
Wiring Harness Length17.24

This part fits 8 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2000Mazda6262.5LV6GASUpstream FrontNon-Calif-ESV No Calif-ESV Upstream Front; Walker Products OE
2000Mazda6262.5LV6GASUpstream FrontFits non-California emissions vehicles upstream of catalytic converter.; Walker Products OE
1999Mazda6262.5LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products OE
1999Mazda6262.0LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products OE
1999Mazda6262.0LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products OE
1998Mazda6262.5LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products OE
1998Mazda6262.0LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products OE
1998Mazda6262.0LL4GASDownstreamDownstream 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.