HomeEmission Control > SensorsWalker 250-25012 Oxygen Sensor - Upstream
Part #: 250-25012

Walker 250-25012 Oxygen Sensor - Upstream

Walker Products OE, Upstream
35 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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OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Products OE, Upstream
Fitment: Hyundai and Kia, Elantra, Spectra, and Spectra5
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 250-25012 Oxygen Sensor for Hyundai and Kia

The Walker 250-25012 oxygen sensor is designed specifically for select Hyundai and Kia models, including the Elantra, Spectra, and Spectra5. This heated oxygen sensor provides accurate emissions control data to optimize engine performance and reduce harmful exhaust emissions.

  • Heated oxygen sensor with 5-wire configuration
  • Specific fit for Hyundai Elantra, Kia Spectra, and Spectra5
  • 19.21-inch wiring harness length for precise installation
  • Threaded mounting type with 18.0 mm thread diameter
  • Radiused polygon male connector for secure connection
  • Wire gauge measurement of 20 for reliable signal transmission
  • Overall length of 22.76 inches for proper fitment

Walker Products OE Line Details

This oxygen sensor is part of the Walker Products OE line, which focuses on providing original equipment quality parts that meet or exceed OEM specifications. The Walker Products OE line ensures compatibility and durability, making it suitable for emission control systems in Hyundai and Kia vehicles requiring precise sensor performance.

Product Features and Specifications

The Walker 250-25012 oxygen sensor features a heated sensor type that allows for faster warm-up times and improved accuracy in measuring oxygen levels in the exhaust gases. The 5-wire design supports both sensor heating and signal output, enhancing reliability. Its 19.21-inch wiring harness length and radiused polygon male connector ensure a secure and exact fit in the vehicle’s emission system. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the designated sensor port.

Common Applications and Issues Addressed

  • Helps maintain optimal air-fuel mixture for Hyundai Elantra and Kia Spectra models
  • Reduces emissions by providing accurate oxygen level readings
  • Prevents engine performance issues related to faulty oxygen sensors
  • Addresses check engine light triggers caused by sensor failure
  • Supports efficient fuel consumption and engine operation

Installation Notes and Tips

When installing the Walker 250-25012 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct socket size for the 18.0 mm threaded sensor to prevent damage. Verify the radiused polygon male connector aligns properly with the vehicle harness to ensure a secure electrical connection. Avoid twisting or stretching the 19.21-inch wiring harness during installation to maintain sensor integrity.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. This oxygen sensor is engineered to provide consistent operation within the emission control system of Hyundai and Kia vehicles.

BrandWalker
Part Number250-25012
PositionWalker Products OE, Upstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length22.76
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity5
Wiring Harness Length19.21

This part fits 35 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2009HyundaiElantra2.0LL4GASUpstreamTo 04/03/2009; B1S1; Al 04/03/2009; Upstream; Walker Products OE
2009HyundaiElantra2.0LL4GASUpstreamTo 04/03/2009; Al 04/03/2009; Upstream; B1S1; Walker Products OE
2009HyundaiElantra2.0LL4GASUpstreamTo 04/03/2009; B1S1; Upstream; Walker Products OE
2009KiaSpectra2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2009KiaSpectra2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2009KiaSpectra52.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2009KiaSpectra52.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2008HyundaiElantra2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2008HyundaiElantra2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2008KiaSpectra2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2008KiaSpectra2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2008KiaSpectra52.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2008KiaSpectra52.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2007HyundaiElantra2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2007HyundaiElantra2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2007KiaSpectra2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2007KiaSpectra2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2007KiaSpectra52.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2007KiaSpectra52.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2006HyundaiElantra2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2006HyundaiElantra2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2006KiaSpectra2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2006KiaSpectra2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2006KiaSpectra52.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2006KiaSpectra52.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2005HyundaiElantra2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2005HyundaiElantra2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2005KiaSpectra2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2005KiaSpectra2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2005KiaSpectra52.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2005KiaSpectra52.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2004HyundaiElantra2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2004HyundaiElantra2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2004KiaSpectra2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2004KiaSpectra2.0LL4GASUpstreamFront 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.