HomeEmission Control > SensorsWalker 250-24871 Oxygen Sensor - Downstream
Part #: 250-24871

Walker 250-24871 Oxygen Sensor - Downstream

Walker Products OE, Downstream
⚙️ 3 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Walker Products OE, Downstream
🚗Fitment: Mazda, CX-7
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker Products OE Oxygen Sensor 250-24871

The Walker Products OE Oxygen Sensor 250-24871 is designed specifically for the Mazda CX-7, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.

  • Heated oxygen sensor for accurate emissions monitoring
  • Specific fit for Mazda CX-7 models
  • 26.1-inch wiring harness length with 4 wires of 20 gauge
  • Threaded mounting with 18.0 mm thread diameter
  • Radiused polygon male connector for reliable connection
  • Overall length of 29.65 inches for proper fitment

Detailed Product Description

The Walker Products OE line focuses on providing original equipment quality parts that meet or exceed OEM specifications. The 250-24871 oxygen sensor is a heated sensor type, which allows for faster warm-up times and improved fuel efficiency. It includes a 26.1-inch wiring harness with four 20-gauge wires, ensuring stable electrical signals and compatibility with the vehicle’s engine control unit. The sensor’s threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the Mazda CX-7’s exhaust system. The radiused polygon male connector is designed to fit securely, reducing the risk of disconnection or signal loss.

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 ensuring correct sensor feedback

Installation Notes and Tips

When installing the Walker Products OE oxygen sensor 250-24871 on a Mazda CX-7, 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 shape and male gender match the vehicle’s harness for a secure fit. Thread the sensor carefully to avoid cross-threading and tighten to manufacturer torque specifications.

Quality Assurance and Warranty

Walker Products OE parts are manufactured to meet strict quality standards, ensuring reliable performance and durability. This oxygen sensor undergoes rigorous testing to comply with emission control requirements. While specific warranty details are not provided here, Walker typically offers coverage consistent with OEM replacement parts.

BrandWalker
Part Number250-24871
PositionWalker Products OE, Downstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length29.65
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length26.1

This part fits 3 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2012MazdaCX-72.5LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2011MazdaCX-72.5LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2010MazdaCX-72.5LL4GASDownstreamFits 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.