HomeEmission Control > SensorsWalker 250-24131 Oxygen Sensor - Downstream
Part #: 250-24131

Walker 250-24131 Oxygen Sensor - Downstream

Walker Products OE, Downstream
11 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, RX-8 and MPV
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 250-24131 Oxygen Sensor for Mazda Vehicles

The Walker 250-24131 oxygen sensor is designed specifically for Mazda MPV and RX-8 models, 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 with 4 wires for accurate readings
  • Specific fitment for Mazda MPV and RX-8 models
  • 15.28-inch wiring harness length for flexible installation
  • Threaded mounting with 18.0 mm thread diameter
  • Radiused polygon male connector for reliable connection
  • 20 gauge wire for durability and signal integrity
  • Overall length of 18.82 inches for proper placement

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-24131) is engineered to meet the exact specifications required by Mazda MPV and RX-8 vehicles. The heated sensor type allows for faster warm-up times, improving emission control efficiency shortly after engine start. Featuring a 4-wire design, this sensor provides accurate oxygen level readings to the engine control unit, helping maintain optimal air-fuel mixture and reducing harmful emissions.

The sensor’s wiring harness length of 15.28 inches offers sufficient reach for installation without excess slack. Its 20 gauge wire ensures durability and consistent signal transmission. The radiused polygon male connector is designed for a secure and precise fit, minimizing the risk of connection issues. The threaded mounting type with an 18.0 mm diameter allows for straightforward replacement and compatibility with factory mounting points.

Walker Products OE Brand Line

Walker Products OE is a product line focused on delivering original equipment quality parts that meet or exceed OEM standards. This oxygen sensor is part of that line, ensuring compatibility and performance consistent with factory-installed components. Choosing Walker Products OE parts helps maintain vehicle reliability and emission compliance.

Common Applications and Issues Addressed

  • Replacement for faulty or failing oxygen sensors in Mazda MPV and RX-8
  • Helps resolve engine performance issues related to incorrect air-fuel mixture
  • Reduces emissions by providing accurate oxygen level data to the engine control unit
  • Prevents check engine light triggers caused by sensor malfunctions
  • Improves fuel efficiency by maintaining proper combustion control

Installation Notes and Tips

When installing the Walker 250-24131 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector type matches the vehicle harness before installation. Properly torque the sensor to manufacturer specifications to prevent leaks or sensor damage. Inspect wiring for any signs of wear or damage during replacement.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. This part is designed to provide consistent operation under normal driving conditions. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.

BrandWalker
Part Number250-24131
PositionWalker Products OE, Downstream
Connector GenderMale
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 11 vehicles. Search below:

YearMakeModelDrive TypeTransmissionLitersCylindersFuel TypePositionNotes
2011MazdaRX-81.3LR2GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2010MazdaRX-8Automatic1.3LR2GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2009MazdaRX-8Automatic1.3LR2GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2008MazdaRX-81.3LR2GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2007MazdaRX-81.3LR2GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2006MazdaRX-81.3LR2GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2005MazdaRX-81.3LR2GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2004MazdaRX-81.3LR2GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
1998MazdaMPVRWD3.0LV6GASDownstreamDownstream oxygen sensor for vehicle installation.; Walker Products OE
1997MazdaMPVRWD3.0LV6GASDownstreamDownstream oxygen sensor for vehicle installation.; Walker Products OE
1996MazdaMPVRWD3.0LV6GASDownstreamDownstream oxygen sensor for vehicle installation.; 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.