HomeEmission Control > SensorsWalker 250-54080 Oxygen Sensor - Upstream
Part #: 250-54080

Walker 250-54080 Oxygen Sensor - Upstream

Walker Products OE, Upstream
⚙️ 14 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, Upstream
🚗Fitment: Mazda, MX-5 Miata
🔄Easy Returns — Return within 60 days for a full refund
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Overview of Walker 250-54080 Oxygen Sensor for Mazda MX-5 Miata

The Walker 250-54080 oxygen sensor is designed specifically for the Mazda MX-5 Miata, 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 with 4 wires for accurate readings
  • Specific fit for Mazda MX-5 Miata models
  • 6.42-inch wiring harness length for flexible placement
  • 20 gauge wire measurement for durability and signal integrity
  • Thread diameter of 18.0 mm with threaded mounting
  • Radiused polygon female connector for reliable connection
  • Overall length of 9.96 inches for proper fitment

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-54080) is engineered to meet the exact specifications of the Mazda MX-5 Miata. The heated sensor type allows for faster warm-up times, improving fuel efficiency and reducing emissions. With a 4-wire configuration and 20 gauge wiring, this sensor provides stable and accurate oxygen level readings to the vehicle’s engine control unit. The 6.42-inch wiring harness length and radiused polygon female connector ensure a secure and precise fit, while the 18.0 mm threaded mounting type allows for straightforward installation in the exhaust system.

Walker Products OE is a product line focused on delivering original equipment quality parts that match or exceed factory standards. This oxygen sensor is part of that line, providing reliable performance and compatibility for emission control systems in Mazda vehicles.

Common Applications and Issues Addressed

  • Helps maintain proper air-fuel mixture for efficient combustion
  • Reduces harmful emissions by accurately monitoring oxygen levels
  • Prevents engine performance issues related to faulty sensors
  • Resolves check engine light triggers caused by oxygen sensor faults
  • Improves fuel economy by providing precise sensor data

Installation Notes and Tips

  • Ensure the vehicle is cool before removing the old sensor to avoid burns
  • Use appropriate tools for the 18.0 mm threaded sensor to prevent damage
  • Verify connector type matches the vehicle’s wiring harness (radiused polygon female)
  • Check wiring harness length (6.42 inches) for proper routing and clearance
  • Follow vehicle manufacturer torque specifications when installing the sensor

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. This part number 250-54080 undergoes rigorous testing to comply with emission control requirements for the Mazda MX-5 Miata. Warranty coverage details should be confirmed with the original parts provider or vehicle manufacturer.

BrandWalker
Part Number250-54080
PositionWalker Products OE, Upstream
Connector GenderFemale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length9.96
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length6.42

This part fits 14 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2015MazdaMX-5 Miata2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2015MazdaMX-5 Miata2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2014MazdaMX-5 Miata2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2014MazdaMX-5 Miata2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2013MazdaMX-5 Miata2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2013MazdaMX-5 Miata2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2012MazdaMX-5 Miata2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2012MazdaMX-5 Miata2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2011MazdaMX-5 Miata2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2011MazdaMX-5 Miata2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2010MazdaMX-5 Miata2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2010MazdaMX-5 Miata2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2009MazdaMX-5 Miata2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2009MazdaMX-5 Miata2.0LL4GASUpstreamFront oxygen sensor compatible with various 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.