HomeEmission Control > SensorsWalker 250-24725 Oxygen Sensor - Downstream
Part #: 250-24725

Walker 250-24725 Oxygen Sensor - Downstream

Walker Products OE, Downstream
20 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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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, Downstream
Fitment: Mazda, MX-5 and MX-5 Miata
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 250-24725 Oxygen Sensor for Mazda MX-5

The Walker 250-24725 oxygen sensor is designed specifically for Mazda MX-5 and MX-5 Miata models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases precisely.

  • Heated sensor type for faster response times
  • Specific fit for Mazda MX-5 and MX-5 Miata
  • 15.28-inch wiring harness length for flexible installation
  • 20 gauge wire measurement with 4 wires for reliable signal transmission
  • Radiused polygon female connector for secure connection
  • Threaded mounting type with 18.0 mm thread diameter
  • Overall length of 18.82 inches for proper fitment

Detailed Features and Specifications

This Walker oxygen sensor (part number 250-24725) features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The sensor includes a 15.28-inch wiring harness with 20 gauge wires, providing durability and consistent electrical performance. Its radiused polygon female connector ensures a precise and secure fit, minimizing the risk of disconnection or signal loss. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the exhaust system of Mazda MX-5 and MX-5 Miata vehicles.

About Walker Products OE Line

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. This oxygen sensor is part of that line, ensuring compatibility and reliable performance for Mazda MX-5 models. Walker Products OE parts are engineered to provide consistent emissions control and maintain vehicle compliance with environmental standards.

Common Applications and Problem Resolution

  • Restores accurate oxygen sensing for improved fuel economy
  • Helps resolve check engine light issues related to oxygen sensor faults
  • Reduces harmful emissions by ensuring proper air-fuel mixture
  • Prevents engine performance problems caused by faulty sensor readings
  • Supports smooth engine idling and acceleration

Installation Notes and Tips

When installing the Walker 250-24725 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. Verify the connector type matches the vehicle’s harness before installation. Thread the sensor carefully to prevent cross-threading and tighten to manufacturer torque specifications. The 15.28-inch wiring harness length provides flexibility for routing during installation.

Quality Assurance and Warranty

Walker oxygen sensors undergo rigorous testing to meet OEM standards for durability and performance. The 250-24725 part is manufactured to provide consistent emissions control and reliable operation over time. Please refer to Walker’s warranty policy for specific coverage details.

BrandWalker
Part Number250-24725
PositionWalker Products OE, Downstream
Connector GenderFemale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length18.82
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length15.28

This part fits 20 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2015MazdaMX-52.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2015MazdaMX-5 Miata2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2014MazdaMX-52.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2014MazdaMX-5 Miata2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2013MazdaMX-52.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2013MazdaMX-5 Miata2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2012MazdaMX-52.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2012MazdaMX-5 Miata2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2011MazdaMX-52.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2011MazdaMX-5 Miata2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2010MazdaMX-52.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2010MazdaMX-5 Miata2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2009MazdaMX-52.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2009MazdaMX-5 Miata2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2008MazdaMX-52.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2008MazdaMX-5 Miata2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2007MazdaMX-52.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2007MazdaMX-5 Miata2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2006MazdaMX-52.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2006MazdaMX-5 Miata2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; 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.