HomeEmission Control > SensorsWalker 250-24988 Oxygen Sensor - Downstream or Upstream
Part #: 250-24988

Walker 250-24988 Oxygen Sensor - Downstream or Upstream

Walker Products OE, Downstream
⚙️ 108 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Walker Products OE, Downstream
🚗Fitment: Hyundai and Kia, Kona, Tucson, Elantra, Forte, Optima, Sonata, Forte Koup, Forte5, Elantra Coupe, and Elantra GT
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Overview of Walker 250-24988 Oxygen Sensor

The Walker 250-24988 oxygen sensor is designed specifically for select Hyundai and Kia models, including the Elantra, Forte, and Tucson. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

  • Heated sensor type for faster response times
  • Specific fit for Hyundai and Kia vehicles
  • 22.17-inch wiring harness length for easy installation
  • Four-wire design with 22 gauge wire for reliable signal transmission
  • Radiused polygon male connector for secure connection
  • Threaded mounting type with 18.0 mm thread diameter
  • Overall length of 25.71 inches for proper fitment

Walker Products OE Brand Line Details

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. The 250-24988 oxygen sensor from this line is engineered to provide consistent performance and durability, matching the standards expected by Hyundai and Kia manufacturers.

Product Description and Attributes

This oxygen sensor features a heated element to reduce warm-up time, improving emissions control shortly after engine start. The four-wire configuration includes two wires for the heater circuit and two for the sensor signal, ensuring accurate and stable readings. The 22 gauge wire size balances flexibility and durability, while the 22.17-inch wiring harness length allows for proper routing in the engine bay. The radiused polygon male connector ensures a secure and precise fit with the vehicle’s wiring harness. The sensor mounts via an 18.0 mm threaded fitting, compatible with the exhaust system of Hyundai Elantra, Forte, Sonata, Tucson, and Kia Optima, Seltos, and other models listed.

Compatible Vehicles and Applications

  • Hyundai Elantra, Elantra Coupe, Elantra GT
  • Hyundai Forte, Forte5, Forte Koup
  • Hyundai Kona, Optima, Sonata, Tucson
  • Kia Seltos and other specified models

Common Issues Addressed by This Oxygen Sensor

  • Check engine light triggered by faulty oxygen sensor readings
  • Poor fuel economy due to incorrect air-fuel mixture
  • Increased emissions and failed emissions tests
  • Engine hesitation or rough idle caused by sensor malfunction
  • Reduced engine performance and drivability issues

Installation Notes and Tips

Ensure the vehicle is cool before installation to avoid burns. Disconnect the battery to prevent electrical shorts. Use the correct 18.0 mm socket for sensor removal and installation. Verify the connector type matches the vehicle harness to avoid connection issues. Avoid twisting or damaging the wiring harness during installation to maintain sensor integrity.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring reliable operation and longevity. This part number 250-24988 is backed by Walker’s quality assurance processes. Please refer to Walker’s official warranty policy for specific coverage details.

BrandWalker
Part Number250-24988
PositionWalker Products OE, Downstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length25.71
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement22
Wire Quantity4
Wiring Harness Length22.17

This part fits 108 vehicles. Search below:

YearMakeModelSubmodelDrive TypeTransmissionLitersCylindersFuel TypePositionNotes
2023KiaForte2.0LL4DownstreamOE Base Sensor
2023KiaSeltosFWD2.0LL4UpstreamOE Base Sensor
2022KiaForte2.0LL4DownstreamOE Base Sensor
2022KiaSeltosFWD2.0LL4UpstreamOE Base Sensor
2021HyundaiKona2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2021HyundaiTucsonFWD2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2021KiaForte2.0LL4DownstreamOE Base Sensor
2021KiaSeltosFWD2.0LL4UpstreamOE Base Sensor
2020HyundaiElantraValue Edition2.0LL4GASDownstreamTo 04/15/2019; B1S2; Al 04/15/2019; Downstream; Walker Products OE
2020HyundaiElantraSEL2.0LL4GASDownstreamTo 04/15/2019; B1S2; Al 04/15/2019; Downstream; Walker Products OE
2020HyundaiElantraSE2.0LL4GASDownstreamTo 04/15/2019; B1S2; Al 04/15/2019; Downstream; Walker Products OE
2020HyundaiElantraLimited2.0LL4GASDownstreamTo 04/15/2019; B1S2; Al 04/15/2019; Downstream; Walker Products OE
2020HyundaiElantraValue Edition2.0LL4GASDownstreamTo 04/15/2019; Al 04/15/2019; Downstream; B1S2; Walker Products OE
2020HyundaiElantraSEL2.0LL4GASDownstreamTo 04/15/2019; Al 04/15/2019; Downstream; B1S2; Walker Products OE
2020HyundaiElantraSE2.0LL4GASDownstreamTo 04/15/2019; Al 04/15/2019; Downstream; B1S2; Walker Products OE
2020HyundaiElantraLimited2.0LL4GASDownstreamTo 04/15/2019; Al 04/15/2019; Downstream; B1S2; Walker Products OE
2020HyundaiElantraValue Edition2.0LL4GASDownstreamTo 04/15/2019; B1S2; Downstream; Walker Products OE
2020HyundaiElantraSEL2.0LL4GASDownstreamTo 04/15/2019; B1S2; Downstream; Walker Products OE
2020HyundaiElantraSE2.0LL4GASDownstreamTo 04/15/2019; B1S2; Downstream; Walker Products OE
2020HyundaiElantraLimited2.0LL4GASDownstreamTo 04/15/2019; B1S2; Downstream; Walker Products OE
2020HyundaiKona2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2020HyundaiTucsonFWD2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2020KiaForteLXS2.0LL4GASDownstreamDownstream oxygen sensor for vehicle installation.; Walker Products OE
2020KiaForteGT-Line2.0LL4GASDownstreamDownstream oxygen sensor for vehicle installation.; Walker Products OE
2020KiaForteFE2.0LL4GASDownstreamDownstream oxygen sensor for vehicle installation.; Walker Products OE
2020KiaForteEX2.0LL4GASDownstreamDownstream oxygen sensor for vehicle installation.; Walker Products OE
2020KiaOptimaPlug-In Hybrid EX2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2020KiaOptimaHybrid EX2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019HyundaiKona2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019HyundaiSonataPlug-In Hybrid2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019HyundaiSonataPlug-In Hybrid Limited2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019HyundaiSonataHybrid SE2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019HyundaiSonataHybrid Limited2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019HyundaiTucsonFWD2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019KiaForteS2.0LL4GASDownstreamDownstream oxygen sensor for vehicle installation.; Walker Products OE
2019KiaForteLXS2.0LL4GASDownstreamDownstream oxygen sensor for vehicle installation.; Walker Products OE
2019KiaForteFE2.0LL4GASDownstreamDownstream oxygen sensor for vehicle installation.; Walker Products OE
2019KiaForteEX2.0LL4GASDownstreamDownstream oxygen sensor for vehicle installation.; Walker Products OE
2019KiaOptimaPlug-In Hybrid EX2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019KiaOptimaHybrid EX2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018HyundaiKona2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018HyundaiSonataPlug-In Hybrid2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018HyundaiSonataPlug-In Hybrid Limited2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018HyundaiSonataHybrid SE2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018HyundaiSonataHybrid Limited2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018KiaOptimaPlug-In Hybrid EX2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018KiaOptimaHybrid Premium2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018KiaOptimaHybrid EX2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017HyundaiElantra2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2017HyundaiElantra2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017HyundaiElantra2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2017HyundaiSonataPlug-In Hybrid2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017HyundaiSonataPlug-In Hybrid Limited2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017HyundaiSonataHybrid SE2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017HyundaiSonataHybrid Limited2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017KiaOptima2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2016HyundaiElantraSport2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2016HyundaiElantraValue Edition1.8LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2016HyundaiElantraSE1.8LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2016HyundaiElantraLimited1.8LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2016HyundaiElantra1.8LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2016HyundaiSonataPlug-In Hybrid2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2016HyundaiSonataPlug-In Hybrid Limited2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2016HyundaiSonataHybrid2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2016HyundaiSonataHybrid Limited2.0LL4ELECTRIC/GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2016KiaForteEX2.0LL4GASDownstreamCalif ESV; B1S2; Downstream; Walker Products OE
2016KiaForteLX1.8LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2016KiaForteEX2.0LL4GASDownstreamCalif ESV; Downstream; B1S2; Walker Products OE
2016KiaForte KoupEXAutomatic2.0LL4GASDownstreamCalif ESV; B1S2; Downstream; Walker Products OE
2016KiaForte KoupEXAutomatic2.0LL4GASDownstreamCalif ESV; Downstream; B1S2; Walker Products OE
2016KiaForte5LXAutomatic2.0LL4GASDownstreamCalif ESV; B1S2; Downstream; Walker Products OE
2016KiaForte5EXAutomatic2.0LL4GASDownstreamCalif ESV; B1S2; Downstream; Walker Products OE
2016KiaForte5LXAutomatic2.0LL4GASDownstreamCalif ESV; Downstream; B1S2; Walker Products OE
2016KiaForte5EXAutomatic2.0LL4GASDownstreamCalif ESV; Downstream; B1S2; Walker Products OE
2015HyundaiElantraSport2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2015HyundaiElantraSE1.8LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2015HyundaiElantraLimited1.8LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2015HyundaiElantra1.8LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2015KiaForteEX2.0LL4GASDownstreamCalif ESV; B1S2; Downstream; Walker Products OE
2015KiaForteLX1.8LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2015KiaForteEX2.0LL4GASDownstreamCalif ESV; Downstream; B1S2; Walker Products OE
2015KiaForte KoupEXAutomatic2.0LL4GASDownstreamCalif ESV; B1S2; Downstream; Walker Products OE
2015KiaForte KoupEXAutomatic2.0LL4GASDownstreamCalif ESV; Downstream; B1S2; Walker Products OE
2015KiaForte5EXAutomatic2.0LL4GASDownstreamCalif ESV; B1S2; Downstream; Walker Products OE
2015KiaForte5EXAutomatic2.0LL4GASDownstreamCalif ESV; Downstream; B1S2; Walker Products OE
2014HyundaiElantra2.0LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products OE
2014HyundaiElantra1.8LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2014HyundaiElantra2.0LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products OE
2014HyundaiElantra Coupe2.0LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products OE
2014HyundaiElantra Coupe2.0LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products OE
2014HyundaiElantra GT2.0LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products OE
2014HyundaiElantra GT2.0LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products OE
2014KiaForteEX2.0LL4GASDownstreamCalif ESV; B1S2; Downstream; Walker Products OE
2014KiaForteLX1.8LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2014KiaForteEX2.0LL4GASDownstreamCalif ESV; Downstream; B1S2; Walker Products OE
2014KiaForte KoupEXAutomatic2.0LL4GASDownstreamCalif ESV; B1S2; Downstream; Walker Products OE
2014KiaForte KoupEXAutomatic2.0LL4GASDownstreamCalif ESV; Downstream; B1S2; Walker Products OE
2014KiaForte52.0LL4Upstream RightB1S2; OE Base Sensor
2013HyundaiElantra1.8LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products OE
2013HyundaiElantra1.8LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products OE
2013HyundaiElantra Coupe1.8LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products OE
2013HyundaiElantra Coupe1.8LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products OE
2013HyundaiElantra GT1.8LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products OE
2013HyundaiElantra GT1.8LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products OE
2012HyundaiElantra1.8LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products OE
2012HyundaiElantra1.8LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products OE
2011HyundaiElantra1.8LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products OE
2011HyundaiElantra1.8LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; 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.